JPH0227239B2 - KYUEKIHOHO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid supply method that can accurately supply a plurality of different liquids.

For example, when supplying liquid from a lorry to a tank at a gas station, the lorry is loaded with different types of liquids, such as regular gasoline, high-octane gasoline, kerosene, and diesel oil, in its separate tank chambers. Depending on the type of oil, the tank at the filling station must be filled with liquid.

As is well known, each tank chamber of a lorry is provided with a bottom valve for supplying oil and a handle for opening and closing the bottom valve. On the other hand, a tank at each gas station, such as an underground tank, is connected to a corresponding liquid supply port installed on the ground. Therefore, when refueling from a lorry, connect the tank of the lorry to a specific fluid supply port via a hose, and use the handle to connect the bottom valve installed in the tank chamber of the lorry where the same type of oil is stored. The tank is opened by the lorry, and liquid is supplied from the lorry to the underground tank. However, if the bottom valve of a different type of oil is opened by mistake, or if multiple bottom valves are opened at the same time, a mixture of oils will occur in the underground tank, and the oil will not only become unusable. This was extremely difficult, as it involved a large-scale operation in which the oil had to be extracted from an underground tank and disposed of.

Therefore, an object of the present invention is to provide a liquid supply method that mechanically ensures that no erroneous operation occurs when supplying a plurality of different liquids.

According to the method for supplying liquid from a lorry to an underground tank according to the present invention, the second step is to open the lid of the underground tank liquid supply port.
A second key is provided for each liquid type, and the second key can be selectively taken out by the first key.
A key holding means is provided at the gas station, and a second key is used to open the lid of the liquid supply port for the corresponding liquid type, and the second key is used to open the lorry in the tank chamber of the liquid type corresponding to the second key. A third key holding means is provided at the underground tank liquid supply port to enable the removal of a third key for opening the bottom valve, and the third key is used to open the bottom valve on the tank wall of the corresponding lorry. The lorry is provided with a bottom valve operation control means that enables the valve opening operation, and the first key selectively takes out the second key, and the second key opens the fuel filler port of the underground tank corresponding to the liquid type. Open the lid, take out the third key, and use the third key to open the bottom valve of the tank chamber of the lorry corresponding to the type of liquid.

Therefore, the second key is provided for each type of liquid and is selectively taken out by the first key, so that the lid of the liquid supply port can be opened by the second key taken out. is necessarily determined, and the third key that can be taken out when the lid is opened is also determined, so the bottom valve handle that can be operated by the third key is also determined,
Therefore, oil mixture can be prevented.

Furthermore, since the bottom valve of the lorry cannot be opened until after opening the lid of the underground tank's fuel filler port, fraud such as draining oil from the lorry during transportation can be prevented.

In order to better understand the present invention, first, an apparatus for applying the present invention will be described.

As shown in FIG. 1, the tank 2 of the lorry 1 is plural, and in this embodiment, there are three tank chambers 3, 4, 5.
It is divided into tank rooms 3, 4, and
5 stores different types of oil such as high-octane gasoline, regular gasoline, and diesel oil. Each tank chamber 3, 4, 5 of the tank 2 is provided with a bottom valve 6, 7, 8 for releasing oil, and the upper part of the tank 2 is provided with a liquid supply handle, that is, each bottom valve 6 in the illustrated example. , 7, 8 are attached with bottom valve handles 9, 10, 11 for opening and closing. These bottom valve handles 9, 10, 11 are locked by handle locks 12, 13, 14 which are bottom valve operation control means. Each of the bottom valves 6, 7, and 8 is connected to a liquid path 15, and a coupling 18 for connecting the main valve 16 and the hose 17 is provided near the outlet of the liquid path 15. Further, each of the tank chambers 3, 4, and 5 in the upper part of the lorry 1 is provided with a liquid supply port 19, respectively. Note that 20 is a first key held together with the engine key.

Furthermore, a plurality of underground tanks 21, 22, and 23 are installed underground in the gas station, and each underground tank 21, 22, and 23 contains various types of gasoline such as high-octane gasoline, regular gasoline, and light oil. Different types of oil are stored. Each underground tank 21, 22, 23 has pipes 24, 25, 26
via corresponding liquid supply ports 27, 28, 2, respectively.
It is connected to 9. In addition, each underground tank 21,
Pipes 30, 31, 32 connected to 22, 23
is connected to each liquid supply machine (not shown).

Further, a key box 34, which is a second key holding means, is installed in the office 33 of the gas station, and this key box 34 has second keys 35, 3 corresponding to the type of oil.
6 and 37 are inserted, and each second key 3
Push buttons 38, 3 corresponding to 5, 36, 37
9 and 40 are provided. Further, the key box 34 is provided with a keyhole 41 into which the first key 20 is inserted. This key box 34 normally holds the second keys 35, 36, 37 in a locked state, and when the first key 20 is inserted into the keyhole 41 and turned, the lock is released and the first key 20 is unlocked. cannot be removed, and in that state, if you press any one of the push buttons, for example 38, you can take out the corresponding second key 35, and if you take out the second key 35, the other second keys 36, 37 ,
is locked and cannot be removed. Therefore, only one second key 35, 36, 37 can be selectively taken out from the lock box 34. Note that these points will be discussed later with respect to other than FIG.

In FIG. 2, for example, a lid 42 is attached to the liquid supply port 27.
This lid 42 is normally provided with a lock pin 44 of a liquid supply port lock 43 which is the third key holding means.
and is locked by the liquid supply port lock 43.
A third key 45 is inserted and locked. Although only one liquid supply port 27 is shown in the figure for convenience, the other liquid supply ports 28 and 29 are similarly provided with lids and liquid supply port locks, and each liquid supply lock is provided with a lid and a liquid supply port lock, respectively. A third key corresponding to the type is held. By inserting a corresponding second key, for example 35, the liquid supply port lock 43 is unlocked, the lid 42 is opened, and the third key 45 can be taken out. When the third key 45 is removed, the second key 35 is locked and held by the liquid supply port lock 43. The third key 45 can unlock the corresponding handle lock, for example 12. In this case, the oil in the tank chamber 3 in which the handle lock 12 is provided and the oil in the underground tank 21 connected to the fuel filler port 27 in which the third key 45 is provided are of the same type.

Next, examples of the present invention will be described.

First, after refueling at the depot, the driver of lorry 1 receives the handle locks 12, 13, 14 from the person in charge of the depot, and the bottom valve handles 9, 10 of the corresponding oil type.
11 and lock each bottom valve handle 9, 10, 11. This handle lock 12, 13, 14
Once locked, it cannot be removed until the key is removed at a gas station.

After stopping at a gas station, the driver takes out the engine key, inserts the first key 20 held together with the engine key into the keyhole 41 of the lock box 34 installed in the office 33, and turns the second key. key 3
Release the lock status of 5, 36, and 37. At the same time the first
The key 20 is locked and cannot be removed from the lock box 34. So now, one push button for example 3
When 8 is pressed and the corresponding second key 35 is taken out, the other second keys 36 and 37 cannot be taken out.

The second key 35 taken out is inserted into the corresponding liquid supply port lock 43, the lid 42 of the liquid supply port 27 is opened, and the corresponding third key 45 is taken out. Third
When the first key 45 is removed, the second key 35 is locked to the liquid supply port lock 43 and cannot be removed. and,
Connect the hose 17 connected to the fluid path 15 via the coupling ring 18 to the fluid supply port 27, and after having the person in charge at the filling station confirm the seal, open the lid of the fluid supply port 19 to check the amount of oil. Request a measurement.

The corresponding bottom valve handle 9 by the third key 45
Remove the handle lock 12 and remove the handle lock 1.
2 aside and turn the bottom valve handle 9 to open the bottom valve 6. Subsequently, when the hose main valve 16 is opened, the oil in the tank chamber 3 is supplied to the underground tank 21 via the bottom valve 6, the liquid path 15, the main valve 16, the hose 17, the liquid supply port 27, and the pipe 24. When the person in charge looks through the fluid supply port and confirms that refueling is complete, he turns the bottom valve handle 9 to close the bottom valve 6.

The third key 45 is taken out from the handle lock 12, and the handle lock 12 is fixed to an iron plate beside the liquid supply port using a magnet or the like. Then, the hose main valve 16 is closed and the hose 17 is removed from the liquid supply port 27.

The liquid supply port 27 is covered with the lid 42, and the third key 45 is inserted into the liquid supply port lock 43 and locked with the lock pin 44, and the second key 35 is taken out.
Insert this second key 35 into the lock box 34, and then take out a second key for a different oil type, for example 36,
Repeat the same operation for each oil type.

After all the liquid supply operations are completed, the first key 20 is turned to lock the second keys 35, 36, 37 in the key box 34, and the first key 20 is taken out. The operator then drives the lorry 1 and returns to the depot, returns each handle lock 12, 13, and 14 to the person in charge of the depot, and the operation is completed.

Next, an example of a specific structure of the lock box 34 will be explained with reference to FIG. 3 and subsequent figures.

As shown in FIGS. 3 and 4, each of the push buttons 38, 39, and 40 provided in the lock box 34 is attached with a plate-shaped push button member 46 that extends inside the lock box 34. Each of the push buttons 38, 39, 40 and the push button member 46 attached thereto are biased in the direction of protrusion to the outside by a spring 47 interposed therein. Two notches 48 and 49 are formed on one side of each push button member 46, and a hole 50 is bored between the notches 48 and 49. On the other side of each push button member 46 is a protrusion 5 that protrudes in a tapered shape so as to widen toward the base side.
1 is formed.

In addition, the notch 4 on the base side of each push button member 46
A slide plate 52 is arranged at a position corresponding to 9, and both ends of the slide plate 52 are connected to brackets 53, which are protruded inside the panel surface 34a of the key box 34,
53 so as to be slidable. In this case, three notched recesses 54 and four protrusions 55 are formed on one side of the slide plate 52, and each push button member 46 is inserted into the corresponding recess 54. One end of the slide plate 52 is connected to the inside of the side wall 34b of the key box 34 via a spring 56, thereby biasing the slide plate 52 to the left in FIG. Also, a stopper 5 is provided at one end of the slide plate 52 on the side of the panel surface 34a.
A lock member 58 operated by the first key 20 engages with this stopper 57 to restrict the position of the slide plate 52. In this case, in the state shown in FIG. 4, the convex portion 55 of the slide plate 52 is fitted into the notch 49 of each push button member 46, and each push button 38, 39, 40 is locked.

In addition, as shown in FIG. 3 in particular, a slide shaft 59 is disposed at a position corresponding to the notch 48 near the tip of the push button member 46 so as to be orthogonal to the push button member 46, and the lower end of the slide shaft 59 is It is slidably inserted through a spring 61 into a shaft cylinder 60 erected on the bottom wall 34c of the key box 34, and is biased upward by the spring 61. At the middle of the slide shaft 59, a set pin 62 whose tip is bent upward into an L-shape extends toward the panel surface 34a, and in FIG. 3, the upper end of the set pin 62 is connected to a push button member. 46
The position of the slide shaft 59 is regulated. The upper end of the set pin 62 is adapted to fit into the hole 50 when the push button member 46 moves. A pedestal 63 is fixed to the upper end of the slide shaft 59, and a second key, for example 35 in this case, is placed on the pedestal 63. .

Furthermore, on the bottom wall 34c of the key box 34 is a lever 65 whose upper end is bent toward the panel surface 34a.
The lower end of the lever 65 is pivotally supported, and the intermediate portion of the lever 65 is connected to the shaft cylinder 60 via a spring 66, thereby urging the lever 65 to rotate toward the panel surface 34a. In the state shown in FIG.
The second key 35 is inserted into the hole 67 drilled in the second key 35.
is locked. In this case, the push button member 4
The tip of 6 is located close to lever 65. Although not shown, other second keys 36, 3
7 is similarly locked.

In the above configuration, the first key 20 is
When inserted into the keyhole 41 of No. 4 and turned, the lock member 58
rotates accordingly and the lock is released, and the fifth
As shown in the figure, the slide plate 52 has a spring 56
It slides a predetermined length to the left in the figure due to the urging force of . As a result, the convex portion 55 of the slide plate 52 comes out of the notch 49 of the push button member 46.
Each pushbutton 38, 39, 40 is unlocked. When the push button 38 is pressed now, the push button member 46 connected to the push button 38 is pushed through the recess 54 of the slide plate 52, and the protrusion 51 of the push button member 46 is pushed in, as shown in FIG. As a result, the slide plate 52 slides again to the right in the figure, and the protrusion 55 of the slide plate 52 fits into the notch 49 of the push button member 46 connected to the other push buttons 39 and 40, and the other push buttons are pressed. 3
9 and 40 are locked. In this case, as shown in FIG. The upper end fits into the hole 50 of the push button member 46, and the slide shaft 59 slides upward to push up the second key 35. Therefore, the second key 35 can be taken out from the lockbox 34. After using the second key 35, insert the second key 35 through the slit 64 again as shown in FIG. As it slides, the set pin 62 presses the push button member 4.
It is extracted from the hole 50 of No.6. Then, the lever 65 is moved by the spring 66 to the panel surface 34a.
It rotates to the side and its tip touches the hole 67 of the second key 35.
At the same time, the push button member 46 is moved to the right in the figure by the spring 47, and returns to the state shown in FIG. Below, press button 3 in the same way.
If you press 9 or 40, press the corresponding second key 3
6 and 37 can be selectively taken out. and all second keys 35,3
After refueling is completed using the keys 6 and 37, it is sufficient to turn the first key 20 and return it to the state shown in FIG. 4 using the locking member 58, and then remove the first key 20.

As explained above, according to the present invention, the first key selectively takes out the second key, the second key opens the lid of the corresponding liquid supply port, and the third key is taken out. The hose connected to the lorry is connected to the liquid supply port, and the third key is used to operate the corresponding bottom valve handle to open the bottom valve to supply liquid, so the liquid supply port can be opened. The liquid supply handle that can be operated with the lid is always identified, and it becomes possible to mechanically prevent oil mixture due to such operation. In addition, unauthorized draining of oil from the lorry is prevented.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the outline of the oil mixture prevention device to which the present invention is applied, Figure 2 is a side view showing the liquid supply port used in the oil mixture prevention device, and Figure 3 is the oil mixture prevention device described above. 4 is a side sectional view showing an example of a key box used in the device, FIG. 4 is a plan sectional view of the same key box, FIGS. 5 and 6 are views similar to FIG. 4 explaining the operation of the key box, FIG. 7 is a diagram similar to FIG. 3 for explaining the operation of the lockbox. 1... Lorry, 2... Tank, 3, 4, 5...
... Tank chamber, 6, 7, 8 ... Bottom valve, 9, 10, 1
1... Bottom valve handle, 12, 13, 14... Handle lock, 20... First key, 21, 22, 2
3... Underground tank, 27, 28, 29... Liquid supply port, 34... Key box, 35, 36, 37... Second key, 42... Lid, 43... Liquid supply port lock, 45...
...Third key.

Claims (1)

[Claims] 1. A second key is provided for each type of liquid to open the lid of the underground tank liquid supply port, and a second key holding means is provided at the gas station so that the second key can be selectively taken out using the first key. The second key enables the lid of the liquid supply port of the corresponding liquid type to be opened,
Further, a third key holding means is provided at the underground tank liquid supply port to enable the third key to be removed to open the bottom valve of the tank chamber of the lorry of the liquid type corresponding to the second key. The lorry is provided with a bottom valve operation control means that enables the opening operation of the bottom valve of the tank chamber of the corresponding lorry using the key No. 3, and the second key
Selectively take out the key, use the second key to open the lid of the fuel filler port of the underground tank corresponding to the liquid type, take out the third key, and use the third key to open the fuel filler port of the underground tank corresponding to the liquid type. A method for supplying liquid from a lorry to an underground tank, characterized by opening a bottom valve in the tank chamber.