JPH0360760B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a structure for preventing oil mixture at a gas station.

(B) Prior Art Conventionally, at gas stations, oil is loaded and unloaded from tank trucks into underground gasoline tanks, and vehicles are refueled from the underground tanks as appropriate. Different types of oil are stored in the plurality of underground tanks, and fuel is supplied from the underground tanks according to the type of oil to be refueled. and,
Tank trucks are used to load and unload oil into underground tanks for refueling.The trucks load various types of oil into tanks at oil depots, and then go to gas stations to load and unload oil to underground tanks. This is what we do.

In this way, various types of oil are transported from oil depots to underground tanks at gas stations via tanker trucks.

Therefore, it is very important to know which type of oil is loaded into which tank of the tank truck at the oil depot, and which type of oil is loaded and unloaded from which tank of the tank truck at the gas station. This is an important thing to check, and if you do it incorrectly, it could cause an oil mixture accident at a gas station, and there is a risk that the wrong type of oil will be sold.

(c) Problems to be solved by the invention Therefore, tags are used for these checks, but since the type of oil can be confirmed by the operator's eyes, it is difficult to confirm the type of oil by using tags. Mistakes in tags or visual errors may occur, resulting in the loading and unloading of a different type of oil from the one that should have been loaded and unloaded into an underground tank, resulting in a gas station selling the wrong type of gasoline, for example, when it should be selling light oil. There was always a danger that this could lead to a serious accident due to negligence in selling the product.

(d) Means for Solving the Problems This invention provides a locking device provided on the bottom valve handle of a tank truck, and a sealing locking device connected to the locking device via a wire for sealing the hatch. It consists of a handle lock device for locking the valve handle on the loading arm for each type of oil used for loading oil at oil depots, and a lid lock device installed on the lid of the underground tank of the gas station. The center of a rotary disk connected to the bottom valve handle is pivoted on a disk-shaped base plate, and a number of keys for different types of oil can be freely inserted and extracted radially between the base plate and the rotary disk. , the rotary disk is configured to be rotatable only when all keys are inserted, and only one key can be pulled out, and the key is held at the periphery of the board and the rotary disk. A sealing hole is drilled at the location corresponding to the insertion position, and the sealing hole is opened and closed by inserting and pulling out the key, and the sealing hole and the hatch are connected with a wire. In addition, the sealing lock device is configured so that the lock activation key that has been inserted in advance for lock activation can be removed by using the lock release key, and the lock device and the One end of the wire for sealing is fixed, and the other end of the wire is inserted into the sealing hole of the locking device, folded back from the opening/closing part of the hatch, and locked onto the locking rod of the sealing locking device. In addition, the handle locking device of the loading arm is configured so that the lock activation key used for each locking device can be used for the same purpose, and the lid locking device is configured so that the locking key used for each locking device can be used for the same purpose. The lock is constructed so that it can be opened and closed only by pressing the lock, and a large number of keys for different types of oil are stored in the lock device, and only the key that matches the type of oil in the tank chamber of the tank truck is removed from the lock device and locked. The lock release keys are stored in key storage cases for each type of oil in advance, and the key storage case is configured so that once one lock release key is removed, other keys cannot be removed. The purpose of this invention is to provide a structure for preventing oil mixture at a gas station.

(E) Effect In this invention, a series of oil type management is performed using a lock release key, from loading oil at an oil depot to refueling an underground tank at a gas station, making it possible to completely prevent oil mixture. . In other words, when loading oil into the tank chamber of a tank lorry at an oil depot, when unlocking the hatch of the tank lorry, the locking device and the sealing lock device locked with the lock activation key must be unlocked. (Please note that the lock activation key cannot be removed at the same time as the lock operation is performed, and the lock release key and lock activation key can only be removed using a separately prepared unlock key.) For this purpose, the lock is released using a separately prepared lock release key for, for example, light oil. In this case, even if an unlocking key for a different type of oil is used, the locking device and the sealing locking device for the tank chamber that is to contain light oil will not be unlocked. Then, when the lock is released using the light oil lock release key, the lock operation keys previously used for the respective locks of the locking device and the sealing lock device become ready to be removed at the same time as the lock is released. Therefore, at the same time as the lock is released, the key used to operate the lock is removed and used on the handle lock device of the loading arm, thereby unlocking the handle lock device of the loading arm for light oil. In addition,
In addition to unlocking the locking device and sealing locking device, the removed lock activation key can only be used to release the handle locking device of the loading arm for light oil, and cannot be used for loading arms of other types of oil. Even if used on the handle lock device, the handle lock device cannot be released. In this way, the loading of light oil into the tank room is completed accurately and without error, and the handle locking device is locked again.
The tank truck's locking device and sealing lock device will be locked again, and then the tank truck will go to a gas station.At the gas station, a separately prepared light oil unlocking key will be used to unlock the gas oil tank compartment. Unlock the sealing lock device at It is used to bring down the rain.

When loading and unloading is completed, the sealing lock device of the light oil tank truck is relocked and the bottom valve is closed.

Moreover, when loading a different type of oil into the tank chamber of a tank truck during the activation and unlocking operations of such locks, the locking device and the sealing lock device for locking and sealing devices for oil other than light oil must be locked. It is sufficient to use an activation key. In this case, the locking device of the bottom valve pivots the center of a rotary disk that is interlocked with the bottom valve on a disk-shaped base plate, and the locking device of the bottom valve pivots the center of the rotary disk that is interlocked with the bottom valve, and A large number of keys for different types of oil can be freely inserted and pulled out in a radial manner, and the rotary disc is configured to be rotatable only when all the keys are inserted. By inserting the lock activation key into the lock device, the lock on the bottom valve will be released, and even if you insert another key, the lock cannot be released. Seeds are prevented from being accidentally poured into underground tanks. Furthermore, at a gas station, it is possible to simultaneously load and unload oil from a plurality of tank rooms to a plurality of underground tanks, if necessary.

(f) Effects According to this invention, the same type of oil can be loaded from the loading arm of an oil depot into the tank chamber of a tank truck, and can also be unloaded from the tank chamber to an underground tank of a gas station. This technology can definitely improve the effectiveness of preventing oil mixtures at gas stations, and furthermore, the confirmation can be performed automatically by simply operating the key to release the lock, without the need for visual confirmation by the operator. This has the effect of making certainty absolute.

Furthermore, due to transport volume, even when a different type of oil is loaded into the tank of a lorry, there are limitations on the bottom valves that can be unlocked using the lock release key and the lock activation key. Even in such a case, there is an effect that confusion of oil types can be prevented.

(g) Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of the main parts of a tank lorry vehicle A, showing parts related to the tank chamber and the bottom valve.

FIG. 2 is an explanatory diagram of the main parts of a loading arm B that also serves as an oil nozzle when loading oil into a tank truck A at an oil depot.

Moreover, FIGS. 3 and 4 are explanatory diagrams showing a portion of the oil filling port to the underground tank T at a gas station. In the present invention, the oil transport and lubrication process involves loading oil from the loading arm B to the tank truck A, and the tank truck A travels to a gas station and unloads the oil to an underground tank T at the same station. The system automatically checks to ensure that the same type of oil is being filled into the underground tank T at the same stand.
Specifically, we will achieve this objective by managing the keys that open and close the seals and locks of tank truck A, loading arm B, underground tank T, etc. under a certain device. .

The structure, operation, etc. of the sealing and locking structures of tank truck A, loading arm B, underground tank T, etc. will be explained below.

First, to explain the tank truck A, the cargo box is provided with a plurality of tank chambers 1, and the bottom of each tank chamber 1 is provided with a bottom valve 2.
By opening the bottom valve 2, oil can be loaded/unloaded (taken out) from the tank chamber 1.

A bottom valve handle 3 for opening and closing the bottom valve provided on the ceiling of the tank chamber 1 is connected to the bottom valve 2, and a locking device a for tank truck vehicles is attached to the bottom valve handle 3. ing.

That is, as shown in FIG. 5, in the lock device a, the center of a rotary disc a2 is pivotally supported on a disc-shaped base plate a1, and keys for different types of oil are arranged radially between the base plate a1 and the rotary disc a2. Y (for example, regular gasoline key,
Keys for light oil, kerosene, etc.) are inserted and inserted so that they can be pulled out freely, and normally only one key of each key can be pulled out. As shown in Fig. 6, the structure is such that a groove y is formed on the surface of each key, and a locking protrusion a4 protruding from the inner surface of the board a1 is loosely engaged in the groove y. Each key cannot be pulled out due to the engagement between the locking protrusion a4 and the groove y, but only one of the locking protrusions a4 is provided with a notch a5, and the key is inserted into this notch a5. Only when the grooves y match can the matched key be pulled out.

Further, a sealing hole a7 is bored in the peripheral edge of the board a1 and the rotating disk a2, and the hole is closed when each key is inserted, and is opened after the key is pulled out. A sealing wire a8 can be inserted through the sealing hole a7, and by connecting the bottom valve handle 3 and a hatch 3', which will be described later, with this wire a8, the bottom valve can be closed. The handle 3 is configured to be locked.

By forming a large number of radial engagement grooves a9 on the rotating disk a2, and providing an engagement body a11 biased by a spring a10 on the base plate a1 to face the engagement groove a9, the lock operation key Y When the bottom valve handle 3 is not inserted, the engaging body a11 engages with the engaging groove a9 to lock the bottom valve handle 3.

Therefore, unless all lock operation keys Y are inserted, the bottom valve handle 3 cannot be rotated.

The substrate a1 and rotating disk a2 configured in this way
The locking device a is constructed so that it also has the function of the bottom valve handle 3 as it is.

The oil type corresponding to each key is displayed from the oil type display window a6 provided on the rotary disk a2 by rotating the rotary disk a2.

That is, one end of the sealing wire a8 is fixed to the sealing lock device a', and the wire is inserted into the sealing hole a7 and also through the opening/closing part of the hatch 3' and turned back to lock the sealing lock. The other end is configured to be fixedly locked to the device a'.

To explain the sealing lock device a' here, the device is provided with a key insertion hole a'1 according to the type of oil as shown in FIGS. When inserted, the locking rod a'2 closes the wire hole a'3 and is locked, a'4 is the return spring, and a'5 is the plate to be fitted into the groove y of the key Y. The spring a'6 is a regulation guide that fits into the notch Y1 of the key Y, and when the key Y is inserted into the key insertion hole a'1, it pushes down the locking rod a'2 and inserts it into the wire hole a'3. and the key Y cannot be pulled out upward due to the engagement between the groove y and the leaf spring a'5.

When removing the key Y, the engagement function of the plate spring a'5 is eliminated by inserting a separately provided light oil key M for unlocking into the key insertion hole a'1, and the key Y can be removed. done and locking rod at the same time
A'2 is pushed upward by the return spring a'4, and the lock of the lock rod a'2 is released.

Next, to explain about the loading arm B, as shown in FIG. Handle lock devices b are provided at required locations.

That is, as shown in FIG. 9, the handle lock device b includes a base b1, a slide plate b2, a locking protrusion b3 formed on the slide plate b2, and a notch formed in a part of the locking protrusion. b4, and a handle lock key N is inserted in accordance with the type of oil to be loaded by the loading arm B, and this key N is formed with a groove n that matches the locking protrusion b3.
As long as the locking protrusion b3 is fitted into the groove n, the handle lock key N cannot be removed, and the slide plate b2 is also locked by the engagement body b5 that engages with the notch b4. Now I can't slide it. b7 is a biasing spring.

When the key Y extracted from the lock device a is inserted into the handle lock device b, the engaging body b5 disengages from the slide plate b2, allowing the slide plate to slide. By bringing the notch b4 to the groove n position of the handle lock key N, the engagement between the groove n of the handle lock key N and the protrusion b3 is released, and the key N can be removed. .

A handle wire b6 is connected to the base end of the handle lock key N, and the wire is
Since the wire is connected to the valve handle 5, the valve handle 5 cannot be opened while the handle lock key N is inserted and fixed in the handle lock device b. When the handle lock device b is unlocked using the key Y removed from the key Y, the handle lock key N is removed and the valve handle 5 can be opened.

Next, the underground tank T at the gas station G will be described. The underground tank T has an oil filler port via an oil filler pipe 6, and a lid 7 is provided on the filler port 6' so as to be openable and closable.

As shown in FIGS. 3 and 4, the lid body 7 is provided with a lid locking device t, and the lid locking device t has a key corresponding to a specific type of oil stored in the underground tank. The mechanism is such that it can only be unlocked by someone else.

The key is the above-mentioned lock release key M, and the lock release key M is stored in advance in a key storage case d for each type of oil as shown in FIG. 13, and as shown in FIG. As shown in FIG. 18, the structure is similar to the handle lock device b in that it is composed of a base d1, a slide plate d2, a locking protrusion d3, a notch d4, and a leaf spring d5. It is.

Note that d6 indicates a marker.

Therefore, by sliding the slide plate d2 and bringing the notch d4 to the position of the key to be removed, the key can be removed because the groove m provided on the key and the locking protrusion d3 are no longer engaged. , on the other hand,
When one key is removed, the plate spring d5 fits into the notch d4 of the hollow locking protrusion of the removed key, and the notch and the plate spring engage, causing the slide plate d2
is a state in which it cannot slide.

The embodiment of the present invention is constructed as described above, and its usage will be explained as follows with reference to FIG. 19.

First, when the tank truck A comes to the oil depot to load oil into the tank chamber 11, the lock device a of the tank truck A remains locked, and neither the bottom valve 2 nor the hatch 3' is open (the 1
(See Figure 9).

This is because the board a that also serves as the bottom valve handle 3
1 and rotating disk a2, a sealing wire a8 is inserted through a sealing hole a7 and spanned, and the same wire is connected to a locking rod of a sealing locking device a'.
a'2, so that the sealing wire a8 seals both the bottom valve handle 3 and the hatch 3'.

In such a state, the key for the type of oil to be loaded into the tank chamber 1 of the tank truck A is removed from the lock device a, the sealing hole a7 corresponding to the type of oil is opened, and the key removed is Insert the key into the key insertion hole a'1 of the sealing lock device a' and press the lock rod.
The lock operation of a'2 is performed.

Therefore, in order to release the sealing wire a8, take out the key appropriate for the type of oil to be loaded, for example, the unlocking key M for light oil, from the key storage case d, and press the sealing lock device a'. Insert the key into the key insertion hole a'1 (see Figure 19).

Then, the leaf spring a'5 disengages from the key Y, and the key Y can be pulled up.

When the key Y is pulled up, the locking rod a'2 is pushed up by the return spring a'4, the lock is released, and the sealing wire a8 can be unsealed, thereby locking the locking device a and the sealing locking device. a' is released, the bottom valve handle 3 and the hatch 3' can be operated, the hatch 3' is closed, and the next loading operation begins (FIG. 19).

When loading oil, the valve handle 5 of the loading arm B must be unlocked.

For this purpose, the key Y extracted from the sealing lock device a' of the tank truck A is used in the handle lock device b for loading the oil type corresponding to the key Y.

That is, when the key Y is inserted into the key insertion hole of the handle lock device b, the slide plate b2 becomes slidable and the handle lock key N becomes ready to be extracted (FIG. 19).

This is because the handle lock key N cannot be removed because its groove n has been engaged with the locking protrusion b3 of the slide plate b2, and the slide plate b2 cannot be removed from the locking protrusion b3 of the slide plate b2. Since the leaf spring b5 was engaged with the notch b4, it was impossible to slide, but by inserting the key Y into the position of the notch b4, the engaging body b5 and the notch b4 were disengaged. , the slide plate b2 can be slid, and the notch b4 can be inserted into the existing handle lock key N.
By sliding it to the position, the handle lock key N can be removed.

When the handle lock key N is removed, the handle wire b6 becomes free, and the valve handle 5 of the loading arm B becomes operable.
At this point, the valve 4 is opened and the desired oil type is loaded into the tank chamber 1 of the tank truck A.

After loading tank truck A,
By reversing the procedure up to now, first connect the valve handle 5 of the loading arm B and the handle lock device b with the handle wire b6, and insert the handle lock key N into the key insertion hole a'1. and remove key Y.

Next, insert the sealing wire a8 into the sealing hole a7 of the locking device a of the tank truck A, insert the above-mentioned extracted key Y into the key insertion hole a'1 of the sealing locking device a', and then lock the locking rod. The other end of the sealing wire a8 is locked with a'2, and the hatch 3' and the bottom valve handle 3 are locked together.

This completes the work of loading oil into tank truck A at the oil depot.

Next, when the tank truck A goes to a gas station and loads and unloads oil into the underground tank T, it first takes out the lock release key M from the key storage case d, but at this time, Decide what type of oil to store in the underground tank and which tank room to extract the corresponding oil type from, and then take out the key M for unlocking the oil type corresponding to the oil type (first step).
Figure 9).

This key M is then inserted into the sealing lock device a'.

At this time, a key Y corresponding to the type of oil stored in the lorry compartment is inserted into the sealing lock device a', and the lock is activated.

Therefore, by inserting the unlocking key M, the sealing lock device a' is unlocked and the sealing wire a8 can be removed from the locking rod a'2, and at the same time, the key Y can be removed. Then, remove the sealing wire a8 from the sealing hole a7 and open the bottom valve handle 3 of the tank chamber 1.

When the bottom valve 2 of the tank chamber 1 opens, the underground tank T is lubricated with a hose connected to it, but a lid locking device t is attached to the lid 7 of the oil filling pipe 6 of the underground tank T. Therefore, the lid locking device t is unlocked using the unlocking key M that has been used to unlock the sealing locking device a' of the tank truck A (FIG. 19).

Therefore, if you mistakenly try to fill underground tank T with a different type of oil from tank room 1,
The key M for unlocking the type of oil stored in the tank chamber 1 is used for the lid locking device t that locks the lid 7 of the underground tank T, and the lid locking device t is
The lock was not released and the lid of the underground tank could not be opened, and the worker realized the mistake.

Similarly, at an oil depot, for example, even if a loading arm B other than light oil is brought into the tank chamber 1 recognized to contain light oil, the handle lock device b of the loading arm B other than light oil is locked with a key for light oil. Since it cannot be unlocked with Y, it is necessary to realize the mistake and correctly unlock the loading arm B for light oil.

As described above, the present invention makes it possible to accurately load the same type of oil from the loading arm B into the tank chamber 1 that accommodates the recognized type of oil when loading oil into the tank truck A at an oil depot. On the other hand, the same type of oil as that stored in the underground tank can be loaded and unloaded from the tank room 1 into the underground tank T of the gas station.

Furthermore, in addition to this, even when the type of oil stored in the tank chamber 1 of the tank truck A is changed from the type of oil previously used to a different type of oil, the locking device a and the sealing locking device a' are It is only necessary to use it in accordance with the changed oil type, and each lock device can be used as is according to each oil type, regardless of which oil type the tank chamber is changed to.

In addition, in the structure of the above-described embodiment and its usage method, as shown in FIGS. 3 and 4, the lid locking device t provided on the lid body 7 is adapted to correspond to a specific type of oil stored in the underground tank. The lock is configured so that it can be unlocked using a key M, but even in other configurations, a key corresponding to a specific type of oil stored in an underground tank, that is, a key for unlocking A separate key is attached that can unlock the lid locking device t installed on the lid.The lid locking device t can be unlocked using this attached separate key instead of directly using the unlocking key M. It can also be configured to be unlockable.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the state of use of a tank truck with the structure of the present invention. FIG. 2 is an explanatory diagram of the main parts of the loading arm. FIG. 3 and FIG. 4 are explanatory diagrams of the oil filling port portion of the gas station. FIG. 5 is a plan view of the locking device. Figure 6 is Figure 5-
Cross-sectional view of the line. FIG. 7 is a front view of the sealing lock device. FIG. 8 is a sectional side view of the same. FIG. 9 is a front view of the handle locking device. FIG. 10 is a sectional side view of the same. FIG. 11 is a front view of the lid locking device. 1st
Figure 2 is the same side view. FIG. 13 is a front view of the key storage case. FIG. 14 is a sectional view taken along the line shown in FIG. 13. FIG. 15 is a sectional view taken along the line of FIG. 13. FIG. 16 is a sectional view taken along the line of FIG. 13. FIG. 17 is an explanatory diagram of the base of the key storage case. FIG. 18 is an explanatory diagram of the sliding plate of the key storage case. 1st
FIG. 9 is an explanatory diagram showing the order of use of the structure of the present invention. A: Tank truck, B: Loading arm, N: Handle lock key, M: Unlock key, T: Underground tank, Y: Key, 1: Tank chamber, 2: Bottom valve, 3: Bottom valve handle, 3 ′：Hatsuchi,
4: Valve, 5: Valve handle, 6: Lubricating pipe, 7:
Lid body, a: lock device, a-1: board, a-2:
Rotating disc, a-4: locking protrusion, a-5: notch,
a-6: Oil type display window, a-7: Sealing hole, a-
8: Sealing wire, b: Handle locking device,
b-1: Base, b2: Slide plate, b3: Locking protrusion, b4: Notch, b5: Engagement body, b6: Handle wire, b7: Biasing spring, a': Sealing lock device, a' 1: Key insertion hole, a'2: Lock rod, a'3: Wire hole, a'4: Return spring,
a'5: leaf spring, a'6: regulation guide, t: lid locking device, d: key storage case.

Claims (1)

[Scope of Claims] 1. A lock device a provided on the bottom valve handle 3 of the tank truck A, and a sealing lock device a connected to the lock device a via a wire a8 for sealing the hatch 3'. ', a handle locking device b for locking the valve handle 5 on the loading arm B for each oil type that loads oil at an oil depot, and a lid locking device t installed on the lid 7 of the underground tank T at the gas station. Moreover, the locking device a pivots the center of a rotary disk a2 which is interlocked with the bottom valve handle 3 on a disk-shaped base plate a1, and radially extends between the base plate a1 and the rotary disk a2. Keys Y for a large number of oil types can be freely inserted and withdrawn, the rotary disk a2 is configured to be rotatable only when all the keys Y are inserted, and only one key Y can be withdrawn and operated. configure,
Also, the key Y is located at the peripheral edge of the board a1 and the rotating disk a2
A sealing hole a7 is made at the location corresponding to the insertion position of the key Y, and the sealing hole a is opened by inserting and pulling out the key Y.
7 can be opened and closed, and the sealing hole a
7 and the hatch 3' are configured to be connected by a wire a8, and the sealing lock device a' can be opened by using a lock release key M, which is inserted in advance for lock operation. A wire a8 is configured so that the key Y can be removed and is used to seal the lock device a and the hatch 3'.
One end of the wire a8 is fixed, and the other end of the wire a8 is inserted into the sealing hole a7 of the locking device a and folded back from the opening/closing part of the hatch 3' to lock the locking rod of the sealing locking device a'.
In addition, the handle lock device b of the loading arm B is configured so that the lock activation key V used for each of the lock devices a and a' can be used for the same purpose. In addition, the lid locking device t is constructed so that it can be opened and closed only by a lock release key M for each oil type, and a large number of keys Y for each oil type are locked by the locking device a.
Only the key Y that matches the type of oil in the tank chamber 1 of the tank truck A is removed from the locking device a and inserted into the sealing locking device a'. This oil mixture prevention structure for a gas station is stored in a key storage case d, and the key storage case d is structured so that when one lock release key M is removed, other keys M cannot be removed.