JPH06105019B2 - Oil mixing prevention method and locking device used therefor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for preventing unmixing of oil from a tank truck or refueling from an oil storage tank at a gas station or the like, and a locking device used therefor.

[Conventional technology]

The inside of the tank of a tank truck that transports oil to a gas station is divided into a plurality of chambers, and different kinds of oil are often loaded in each tank.

For example, when regular, high octane, light oil, kerosene, etc. are loaded into a single tank truck, it is dangerous for a gas station to be refueled in the underground tank etc. according to the type of oil when unloading. Is.

Therefore, conventionally, the checking means at the time of unloading has been performed by artificially collating the oil type tag provided on the tank lorry bottom valve valve and the like with the oil type plate on the gas station side.

[Problems to be Solved by the Invention]

However, since such confirmation means is generally a work that relies on human memory, there is an endless amount of oil mixture in the tank due to confirmation errors and erroneous memories.

Therefore, the object of the present invention is to prevent mixing of oil by eliminating the parts that rely on human memory, making the loading and unloading work consistent, and opening only with the same oil type lock. The purpose is to do.

[Means for Solving the Problems]

In order to solve this problem, an oil mixing prevention method of the present invention is to connect an oil discharge valve and a predetermined part of an oil storage tank with a connecting body, and to connect the connecting body with a main body having a locking mechanism and the locking mechanism. Of the locking device, which is engaged with and has a different unlocking position for each oil type, and which is detachable from the main body and comprises an oil type plate indicating the oil type, on the hook portion provided on the main body The oil seed plate is locked by hooking the end portion, and at the time of unloading the oil, the locking mechanism and the oil are locked by an oil injection port key having a key position matching the locking position of the oil seed plate of the locking device. Release the engagement with the seed plate to release the oil discharge valve locked by the connecting body, and use the key connected to the body of the filler port key to open the filler port lid of the gas station. By unlocking the other Characterized in that to prevent 混油 unlocking at the species key as improper.

Further, the locking device used in this method has a main body having a locking mechanism and an unlocking position which is engaged by the locking mechanism when mounted on the main body and which is different for each oil type. An oil species plate indicating an oil species that is detachable from the main body, wherein the main body is provided with a hook portion whose upper part is closed when the oil species plate is attached, and the main body has It is characterized by connecting a key for unlocking the lid of the filling port of the gas station.

〔Example〕

 Hereinafter, the present invention will be specifically described based on Examples.

FIG. 1 is a first view of a locking device and an unlocking key used in the present invention.
An example is shown. In the figure, reference numeral 1 denotes a locking device main body provided with a mooring portion 1a for fixing one end of a connecting body 5 such as a wire and a hook portion 1b for locking the other end, and a bottom portion is formed of a leaf spring as a locking mechanism. The latch 1c is provided. Reference numeral 2 denotes an oil seed plate provided with a protrusion 2a that fits into the groove 1d of the locking device body 1, and a guide 2b and a latch groove 2c (see FIG. 2) are provided at the bottom of the oil seed plate.

Reference numeral 3 in FIG. 1 denotes an oil filler key, which is provided with a groove 3a at a position corresponding to the position of the guide 2b of the oil seed plate 2. A key 4 for unlocking the lock of the filling port of the gas station to which the filling hose from the tank truck is connected is attached to the filling port key 3 with a ring or the like.

FIG. 2 shows a state in which the oil seed plate 2 is attached to the locking device body 1. When the end of the wire 5 is hooked on the hook portion 1b of the locking device body 1 and the oil seed plate 2 is mounted as shown in FIG. 2 (a), the latch groove 2c of the oil seed plate 2 is fitted at the position of the latch 1c. However, the oil seed plate 2 cannot be removed from the locking device body 1 as shown in FIG. In this state, the oil seed plate 2 closes the upper portion of the hook portion 1b, so that the wire 5 cannot be removed and the locked state is achieved.

When removing the wire 5, the guide 2b of the oil seed plate 2
When the oil filler port key 3 having the groove 3a matching the position of is inserted from the lower part of the oil seed plate 2 as shown in FIG. 3 (a), the tip of the oil seed plate 2 pushes down the latch 1c to push it from the latch groove 2c. Since it is released, the engagement relationship between the locking device body 1 and the oil seed plate 2 is released. Then, as shown in FIG. 3 (b), when the oil filler key 3 is pulled out together with the oil seed plate 2, the upper portion of the hook portion 1b is released, so that the wire 5
Can be removed from the hook portion 1b and unlocked.

An oil mixing prevention method using the locking device having such a structure will be described.

Figure 4 shows an ordinary tank truck.
Is a tank, 11 is a bottom valve valve provided in each compartment in the tank 10, and 12 is a lorry hatch. When the tank truck is loaded, the wire 5 is laid between the bottom valve 11 and the truck hatch 12, the locking device body 1 is connected to the end of the wire 5, and the oil type installed as shown in FIG. Insert the oil seed plate 2 according to the above. The object to be locked is the bottom valve 11 provided at the top of the tank truck.
7 and the lorry hatch 12 may be provided between the valve handle 14 of the discharge port 13 provided at the lower portion of the lorry vehicle and the wire fixing band 15 as shown in FIG.

At the gas station, as shown in FIG. 8, the oil filler port keys 3 according to the type of oil are stored in the multiple key slider 20, and when the tank truck arrives and the type of oil to be refueled is indicated, the clerk Is an indicator by moving the slider plate 22
Align 21 with the indicated oil type, and remove the lubrication port key 3 that matches the oil type from the key slider 20.

Next, as shown in FIG. 9, the oil supply port key 3 is inserted, the oil seed plate 2 is removed by the method described above, and the wire 5 is removed from the hook portion 1b. At this time, unless the guide position of the oil seed plate 2 and the oil filling port key 3 are aligned, the oil filling port key 3 cannot be mounted, and the wire 5 cannot be removed. After removing the oil filler port key 3, remove the lock 31 on the lid of the oil filler port 30 of the gas station using the key 4 that descends from the oil filler port key 3, and refuel the hose from the tank truck vehicle. Connect. Open the bottom valve 11 of the tank truck to start unloading.

11 to 14 show another example of the locking device used in the present invention.

The example of FIG. 11 is the same as the example of FIG. 1 in the locking device main body 1, but is different in that the oil seed plate 2 having guide holes 2d penetrating in the thickness direction is used. The guide holes 2d are arranged at different intervals for each oil type, and the latch 1c is pushed down by using the oil injection port key 3 having the groove 3a corresponding to the interval, so that the latch groove (not shown) on the back surface of the oil type plate 2 is formed. Can be unlocked by releasing the engagement between the latch 1c and the latch 1c.

FIG. 12 (a) shows another example of the locking device, in which a latch 1e that can be moved back and forth by a spring is provided on the side surface of the locking device main body 1, and as shown in FIG. The latch hole 2e provided at the center of the side of the is engaged and locked. A guide groove 2f is provided on the side portion of the oil seed plate, and the oil injection port key 3 having the groove 3a that enters the guide groove 2f can be unlocked by inserting it into the guide groove 2f.

FIG. 13 (a) shows another example of the locking device, in which latches 1e that can be moved back and forth by springs are provided on both sides of the locking device main body 1, and the latch 1e is engaged on the side surface of the oil seed plate 2. By doing so, a push plate 2h is provided which is retracted inside. When the oil seed plate 2 is attached to the locking device body 1,
As shown in FIG. 13 (b), the latch 1e pushes the push plate 2h to engage the oil seed plate 2. When unlocking, insert the tip of the lubrication port key 3 into the guide hole 2g and push the plate 2h.
To the outside and to retract the latch 1e to release the latch.

FIG. 14 (a) shows another example of the locking device, in which the hook 1b is provided in the central portion of the locking device main body 1, the latch 1f is provided in the vicinity thereof, and the engaging portion 1g is provided at the diagonal corner. Is provided. As shown in FIG. 14 (b), the oil seed plate 2 is pushed and rotated to be mounted on the locking device body 1 so that the corners of the oil seed plate 2 fit into the engaging portions 1g. At the time of unlocking, the oil seed plate 2 can be removed by inserting the oil filler key 3 into the guide hole 2i of the oil seed plate 2 and pushing the latch 1f to rotate the oil seed plate 2.

The above embodiment is an example of the present invention, and the present invention is not limited to these, and other modifications are possible. Further, the oil mixture prevention method of the present invention can be applied not only to refueling from a tank truck, but also to other uses.

〔The invention's effect〕

As described above, according to the present invention, since the valve can be unlocked only by the key corresponding to the oil type displayed on the oil type plate, the mixed oil can be reliably prevented without depending on human memory. be able to.

Further, since the same oil type plate is used for loading and unloading work, the work can be made consistent.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of a locking device according to the present invention, FIG. 2 is a sectional view for explaining a situation during locking, FIG. 3 is a sectional view for explaining a situation during unlocking, and FIG. Is a side view showing an example of a tank truck to which the present invention is applied, FIGS. 5 to 10 are explanatory views showing a process from locking to unlocking, and FIGS. 11 to 14 are other embodiments of the locking device of the present invention. It is a figure which shows an example. 1: Locking device body 2: Oil seed plate 3: Lubrication key 4: Key 5: Wire

Claims (2)

[Claims] 1. An oil discharge valve (11) and a predetermined portion (12) of an oil storage tank are connected by a connecting body (5), and the connecting body (5) is connected with a locking mechanism (1c) (2c). Displaying the oil type that is detachable from the main body (1), which is engaged with the main body (1) and the locking mechanism (1c) (2c) and has different unlocking positions for each oil type Oil seed plate (2)
Of the locking device, the lock device is locked by hooking the end portion on the hook portion (1b) provided on the main body (1) and mounting the oil seed plate (2), and at the time of unloading the oil, the locking device. The oil injection port key (3) having a key position that matches the locking position of the oil seed plate (2) of the above, the locking mechanism (1c) (2)
c) is disengaged from the oil seed plate (2) to release the oil discharge valve (11) locked by the connecting body (5), and the body of the oil filler key (3) Unlock the key (3) (4) of another oil type by removing the lock (31) on the lid of the oil filling port (30) of the gas station using the key (4) connected to (1). A method for preventing oil mixture, which is characterized by preventing oil mixture. 2. A main body (1) having a locking mechanism (1c) (2c)
With respect to the main body (1), which is engaged by the locking mechanism (1c) (2c) when attached to the main body (1) and has an unlocking position different for each oil type. A detachable oil seed plate (2) indicating the oil seed, and a hook portion (1b) whose upper part is closed when the oil seed plate (2) is attached to the main body (1). A locking device characterized in that a key (4) for removing the lock (31) of the lid of the oil filling port (30) of the gas station is connected to the main body (1).