JPH0730559Y2 - Incorrect oil supply prevention device for oil storage tank - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to petroleum transported by a tank truck.
The present invention relates to an erroneous oil supply prevention device for an oil storage tank that supplies a predetermined oil to a predetermined oil supply port without error when supplying oil from the oil supply port of a gas station to the oil storage tank.

[Conventional technology]

Petroleum transported from the oil depot to the gas station is
Various types of oil such as regular gasoline, high-octane gasoline (high-octane), kerosene, and light oil are carried by a tank lorry loaded with a container defined in multiple, but from a tank lorry at a gas station. Refueling
As shown in FIG. 5 and FIG. 6, a predetermined one of the bottom valve operation handles 2 formed on the tank upper floor of the tank truck 1 is opened to open the valve, and the valve is led to the rear end portion or the side portion to open and close. It is common to supply the oil from the oil supply port 3a of the common oil supply pipe 3 having the lever 3b to the oil supply port 5 of the corresponding oil storage tank of the gas station via the oil supply hose 4. For refueling the oil storage tank, an operator connects the oil supply pipe 3 at the rear end or side of the tank / lorry and the oil supply port of each oil storage tank with the oil supply hose 4 to make regular, high-octane oil, kerosene, light oil, This is done by sequentially changing the positions of the oil filling port and the bottom valve operation handle of the tank / lorry for heavy oil, but in the past, the work of connecting and replacing the oil supply hose to the oil filling port of the specified oil storage tank, and the oil filling port The operator opens and closes the valve corresponding to the above, relying only on the visual recognition / memory means, in which the operator visually confirms and stores the display of the oil inlet and the bottom valve operating handle.

[Problems to be solved by the device]

In the above-mentioned conventional oil supply device for an oil storage tank, a predetermined oil from among a plurality of types must be supplied to the oil inlet of a corresponding predetermined oil storage tank. One hose supplies oil to the oil fill ports of multiple oil storage tanks, so it is easy to make a mistake in connecting the hoses, opening another type of valve, and causing different oil to be supplied to the oil fill ports. There was a risk of

The present invention has been made for the purpose of solving the problems in the above conventional device and providing an apparatus for preventing erroneous oil supply to an oil storage tank.

[Means for Solving the Problems]

As a concrete means for achieving the above object, the present invention is an oil supply pipe in which predetermined oil separately stored in a tank of a tank truck is led to a rear end portion or a side portion of the tank truck. In a device for supplying oil to a corresponding oil filling port of a gas station via a fueling hose, a connecting member is provided on the outer peripheral surface of the oil filling port and the outer peripheral surface of the lid of the oil filling port is protruded. An engaging member that is locked by being engaged with the connecting member is vertically provided, and a mounting portion that is mounted on the outer peripheral surface of the lubricating port, a tongue piece that projects outward from the mounting portion, and the aforementioned A fixing member having a plurality of engaging holes formed in a tongue piece, and the fixing member is fitted between the outer peripheral surface of the oil filling port and the engaging member of the lid and extends across the connecting member. Has a leg portion that engages with the engagement hole, and the lubrication is performed when the lid is opened. A fixing member that is removable from the fixing hole, and the engaging position of the engaging hole and the leg portion of the removing member is different for each fixing member; and the engaging hole of the fixing member. The bottom valve operation handle of each oil type formed on the tank upper surface floor of the tank / lorry is provided with a pair of locking / unlocking mechanism configured with one attaching / detaching member having a leg portion that can be engaged at the engaging position. A lock fixing metal fitting that is attached to the outer peripheral surface of the base of the handle support shaft and has a tongue protruding outward, and a box-shaped member that is open on one side. A handle lock that is detachably attached to the handle in a state where the inner surface of the upper end is close to the upper end of the handle, and a plate member whose upper part is bent in an inverted U shape, The hook that is inserted into the hole and locked at one end with the handle A dollar latch is provided, and on one side of the handle lock, there is a detachable member insertion hole whose engaging position is different depending on each oil type for inserting the leg portion of the detachable member provided at the oil inlet. It is possible to engage and disengage a pin that is bored and is fitted to a recess formed on the side surface of the plate-like handle latch on the other side of the handle lock by inserting and pressing the leg portion of the detachable member. As described above, the present invention proposes an erroneous oil supply prevention device for an oil storage tank, which is characterized in that it is projected through a compression coil spring.

[Action]

With the above-mentioned configuration, the following operations are performed. The detachable member cannot be removed from the lubrication port unless the lid of the lubrication port is opened during lubrication. Oil type of the oil inlet,
If the oil type in the bottom valve operation handle formed on the tank upper floor of the tank truck that should correspond to this is different,
The leg of the detachable member removed from the locking / unlocking mechanism of the lubrication port should be aligned with the detachable member insertion hole into which the leg is to be inserted, which is formed in the handle lock that locks the bottom valve operation handle. Therefore, the bottom valve operation handle cannot be unlocked. Also, after refueling,
When returning the detachable member that locks the bottom valve operation handle and pulls out from the handle lock to the predetermined oiling port, the leg portion of the detachable member does not match the engaging hole of the fixing member of the locking / unlocking mechanism. In this case, the locking / unlocking mechanism cannot be locked, and the operator is warned of the incorrect operation.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 7 to 9 are perspective views for explaining the locked / unlocked state of the locking / unlocking mechanism 6 provided in the oil filling port 5 of each oil storage tank of the gas station. Cover the oil inlet 5 with the lid 7,
A support fitting 7a is fixed to the side surface of the lid 7, and an engaging member 7b is vertically provided. On the outer surface of the oil injection port 5, a fixed column 5a is provided at a position corresponding to the connecting member 7b, and the connecting member 5b is pivotally supported on this. Engagement holes are formed in each of the connecting member 5b and the engaging member 7b, and the padlock 8 is penetrated through the engaging holes for locking. The locking / unlocking mechanism 6 is composed of a pair of members, that is, a fixing member 9 and a detachable member 10. The fixing member 9 is composed of a mounting portion 9a for mounting the outer peripheral surface 5d of the oil filling port 5 and a tongue piece 9b having an engaging hole 9c protruding outward, and a fastening band 11 is provided on the outer peripheral surface 5d of the oil filling port. It is installed and fixed. The attachment / detachment member 10 is fitted between the engaging member 7b vertically provided on the lid 7 so that the upper portion thereof straddles the connecting member 5b of the oil filling port, and the tongue piece 10b at the upper end is attached to the lid 7.
It is pressed by the engaging member 7b. A leg portion 10a that engages with the engagement hole 9c of the fixing member 9 is formed on the lower portion of the detachable member 10 so as to straddle the connecting member 5b. Therefore,
The locking / unlocking mechanism 6 in a locked state in which the fixing member 9 and the detachable member 10 are engaged with each other cannot be unlocked unless the padlock 8 is unlocked and the lid 7 is opened.

The leg portions 10a of the attaching / detaching members that compose the locking / unlocking mechanism 6 provided in each oil filling port 5 of the oil storage tank have their legs displaced from each other depending on the type of oil. For example, of the left and right legs, the dimensions shown as A and B, which are the cutouts on both sides of the wide leg, are set by dividing the range from zero to the maximum value, and a specific oil type such as regular, high octane, or kerosene is set. The legs are distinguished.

After unlocking the locking / unlocking mechanism 6 of the oil injection port 5, removing the attaching / detaching member 10 and connecting the refueling hose, refueling is performed by the predetermined number of bottom valves formed on the tank upper floor 1a of the tank / lorry. It is performed by opening the valve of the operation handle 2. The handle lock provided on the bottom valve operation handle is locked / unlocked by the detachable member 10 which has been removed.

1 to 4 are explanatory views of the locking / unlocking mechanism of the bottom valve operating handle 2. The support shaft 2a of the valve bottom operation handle 2 is screwed into the base 1b, and the valve is opened and closed by the rotation of the handle. The base 1b has a mounting portion 13a on its outer peripheral surface and a tongue piece 1 protruding outward and having its end bent in a U-shape.
The lock fixing metal fitting 13 composed of 3b and 3b is tightened and fixed by a tightening band 14. Between the lock fixing bracket 13 and the handle 2,
A box-shaped handle lock (15) having an opening on one side is arranged. That is, the box-shaped handle lock 15 is detachably attached to the handle 2 with the inner surface of the lower end thereof being close to the tip of the tongue piece 13b of the lock fixing metal fitting and the inner surface of the upper end being close to the upper end of the handle 2. It has been done. And a box-shaped handle lock
15, elongated holes 16a, 16b are formed in parallel in the upper end surface 15a, the upper part of which is bent into an inverted U shape, and the lower end part is bent into a substantially Z shape.
A handle latch 17 made of a plate-shaped member having a lower end reduced in diameter is inserted. The upper part 17 'of the handle has a long hole for the handle lock.
16a and 16b are fitted and one end thereof is locked to the handle 2, and the other end 17 ″ is a long hole 21a formed in a bent portion of a back cover 21 described later and a tongue piece 13b of a lock fixing metal fitting. It penetrates through the perforation 13c formed at the U-shaped end of the.

A pin holder 18 is attached to the inner surface of the handle lock 15 slightly closer to the upper end, and a pin 20 is projected on the pin holder 18 via a compression coil spring 19. The tip end of the pin 20 is the plate-like handle. It fits into a recess 17a formed on the side surface of the latch 17. Further, a back cover 21 is attached to the opening side of the box-shaped handle lock 15 having an opening on one side so that the center near the lower end is bent in a substantially Z shape so as to face the inner surface of the middle lock 15. A return spring 22 is provided inside. The return spring 22 is a perforation formed in the back cover 21 through the upper end of the back cover 21, the inner surface of the handle lock 15 and the back cover 21.
Since it is attached in a tensioned state with the bent portion near the lower end portion of the handle latch 17 extending downward of 21a, the handle latch 17 is always urged upward by a spring action. Reference numeral 23 is an interlock spring formed at the lower end of the back cover 21. Pin on the above handle lock 15
On the side opposite to the side where 20 is installed, lock the above-mentioned lubrication port 5
An attaching / detaching member fitting hole 24 for inserting the attaching / detaching member 10 removed from the unlocking mechanism 6 is provided. This removable member fitting hole 24
For each handle lock 15 of the bottom valve operating handle 2 formed on the floor of the tank upper surface of the tank / lorry, the position to receive the leg portion 10a of the detachable member is shifted, and only the detachable member according to the oil type is used. It is set not to accept.

The attachment / detachment member 10 is inserted through the attachment / detachment member insertion hole 24 of the handle lock, and the tip end of the leg portion 10a thereof causes the pin 20 fitted in the recess 17a of the handle latch 17 to be elastic in the compression coil spring 19. Press against. By this pressing, the handle latch 17
And the pin 20 are disengaged, and the handle latch 17 is projected upward by the action of the return spring 22. The upper end 17 'of the handle latch rises to the position of the imaginary line in the figure,
The lower end 17 ″ is housed inside the back cover 21. On the inner surface of the handle lock 15 provided with the attachment / detachment member fitting hole 24,
A plate-like retaining spring 25 is fixed slightly upward so that the inserted detachable member 10 presses the pin 20 and does not fall off. The retaining spring 25 is provided with a notch 25a at an intermediate position, and its tip 25b has a recess 17b formed on the side surface of the handle latch 17 on the side opposite to the mating recess 17a forming portion.
Is located in. In the process of inserting the handle lock into the detachable member fitting hole 24, the protrusion 10c of the leg portion 10a slides on the upper surface of the detachable member 10 while pressing the retaining spring 25 downward, and the notch 25a is formed. When it exceeds, the notch 25a is structured to engage with the receiving portion 10d at the rear end of the projecting portion 10c by the spring action.

With the above configuration, the handle lock 15 is unlocked by pulling up the handle latch 17 and disengagement from the handle 2. Therefore, the handle lock 15 should be detached from the upper end of the handle 2 integrally with the handle latch 17 to the outside. Then, the free handle 2 can be rotated to open the valve. A recess formed on the side surface of the handle latch 17 to engage with the retaining spring 25.
Another concave portion 17c is formed near the upper portion of 17b, and the tip end of the rod-shaped member 21b led out from the back cover 21 is positioned in the concave portion 17c so that the handle latch 17 does not overshoot the upper portion of the handle lock 15. So that it plays the role of a stopper. Further, the frame 27 attached to the front surface of the handle lock 15 is a display plate 27a that indicates the type and capacity of oil contained in the tank.
It is a storage frame for inserting.

Next, the locking mechanism of the bottom valve operation handle after refueling will be described. After the handle 2 is rotated to close the valve, the handle lock 15 is arranged so that the inner surface of the lower end thereof is close to the tip of the tongue piece 13b of the lock fixing fitting 13 and the inner surface of the upper end is close to the upper end of the handle 2. Then, put it on the handle 2. When the handle latch 17 is pushed down in this state, one end 17 'bent into a U shape is locked to the handle 2 through the long hole 16a of the handle lock. The other end 17 ″ of the handle latch penetrates the long hole 21a formed in the bent portion of the back cover 21 and the perforation 13c formed in the U-shaped end of the tongue piece 13b of the lock fixing metal fitting to form the tongue. At the same time, the upper end of the recess 17b formed on one side surface of the handle latch 17 pushes down the tip of the retaining spring 25 to engage the notch 25a with the leg 10a of the detachable member 10. Since the engagement is released, the detachable member 10 can be pulled out to the outside.
When is pulled out, the pin 20 is fitted into the recess 17a formed on the other side surface of the handle latch 17 by the action of the compression coil spring 19. Thus, the bottom valve operating handle has a handle lock.
The detachable member 10 that is locked by the handle 15 and the handle latch 17 and pulled out from the handle lock 15 is returned to the locking / unlocking mechanism 6 of the oil filling port 5 of the gas station.

Here, a locking confirmation mechanism provided in the locking / unlocking mechanism 6 of the oil filling port 5 will be described with reference to FIGS. 7 to 9.
The lock confirmation mechanism is composed of a fixing member 9 mounted and fixed to a specific oil filling port, and a detachable member 10 corresponding thereto. That is, an engagement hole 9c formed in a specific fixing member, for example, the fixing member 9 mounted and fixed to a regular oil filling port, is different from an engaging hole formed in another fixing member of the oil filling port such as high octane or kerosene. ,
The engagement positions with the leg portions 10a are different from each other, and the leg portions 10a of the detachable members to be engaged are also displaced from each other by the oil type as described above. Therefore, when the attaching / detaching members (10 'in FIG. 9) having the leg portions that do not correspond to the predetermined engaging holes 9c of the fixing member 9 are attached, the engaging positions do not match with each other, and the attaching / detaching members are fixed. From leg
Only the height of 10a will be lifted. In this state, even if the oil filling port 5 is covered with the lid 7, it is impossible to close and lock the lid 7 because an unattachable detachable member interferes with it. Therefore, the operator is informed that the detachable member obtained by unlocking the lock of the bottom valve operation handle is not attached to the predetermined oil inlet but is attached to a different oil inlet. In addition, the color of the fixing member attached and fixed to the oil inlet of each oil storage tank is made different,
If the colors of the corresponding attachment / detachment members are fitted to each other, the colors can be identified, and it is more effective for preventing erroneous operation.

The operation of refueling the erroneous oil refueling prevention device according to the present invention will be described below.

(1) The operator of the tank truck receives a key from the person in charge of the gas station to open the lid of the oil filling port of the oil storage tank.

(2) Connect one end of the oil supply hose to the oil supply port of the oil supply pipe led to the rear end or side of the tank truck.

(3) Unlock the oil inlet (regular) of the designated oil storage tank,
Open the lid.

(4) Remove the attachment / detachment member (regular) of the locking / unlocking mechanism.

(5) Connect the other end of the oil supply hose to this oil inlet.

(6) The handle lock of a predetermined bottom valve operation handle (regular) on the tank upper surface floor of the tank / lorry is unlocked by the detachable member removed and opened.

(7) Open the lever on the side of the tank / lorry oil supply pipe.

(8) Refueling (9) Same as above Close the lever.

<The above is the regular refueling completion> (10) Unlock the high-octane oil filling port of the next scheduled refueling and open the lid (this operation is performed during the regular refueling and waits Efficient).

(11) Remove the attachment / detachment member (high octave) of the locking / unlocking mechanism.

(12) Close the refueling valve (regular) on the tank floor of the tank / lorry.

(13) Move the other end of the refueling hose from regular to the high-octane lubrication port and connect it.

(14) The attachment / detachment member (regular) is engaged with the fixing member of the oil inlet (regular), the lid is closed, and the locking is performed.

(15) With the detachable member (high-octane), unlock the handle lock of the bottom valve operation handle (high-octane) on the tank upper floor of the tank / lorry and open the valve.

(16) Open the lever on the side of the tank / lorry oil supply pipe.

(17) Refueling (18) Same as above Close the lever.

<The above is the end of high-octane refueling> After that, the kerosene, light oil, and heavy oil are refueled sequentially by the same operations as in (10) to (18) above. Finally, (19) Turn the bottom valve operation handle (heavy oil) on the tank top floor of the tank truck to close the valve.

(20) Remove the other end of the oil supply hose from the oil inlet (heavy oil).

(21) The attachment / detachment member (heavy oil) is engaged with the fixing member of the oil inlet (heavy oil), the lid is closed, and the lock is performed.

(22) Remove one end of the refueling hose from the refueling port of the tank / lorry refueling pipe and store it.

(23) Return the locked lid key to the person in charge at the gas station.

This completes all refueling work.

As described above, the fixing members attached and fixed to the oil filling ports of the respective oil storage tanks are distinguished by color, for example, regular is red, high octane is black, kerosene is yellow, light oil is blue, and heavy oil is white. However, if the colors of the detachable members corresponding to the above-mentioned respective fixing members are made to match each other, it is possible to confirm the locking by the engagement of the fixing member and the detachable member and also to make a visual identification, so that an erroneous operation can be prevented in advance.

[Effect of device]

The present invention, when supplying several kinds of oil from a tank truck to an oil tank of a gas station, has a fixing member having an engaging hole at the oil inlet of each oil tank, and a leg engaging with the engaging hole. A locking / unlocking mechanism consisting of a detachable member having a portion is provided, and a plurality of bottom valve operation handles formed on the tank upper floor of the tank / lorry includes a handle lock of a box lock and a handle latch inserted through this. A locking / unlocking mechanism having a pin that fits into the recess of the handle latch as a main component is provided, and the oil type of the oil inlet and the oil type in the bottom valve operation handle on the tank / lorry side that corresponds to this Only when they match, the legs of the detachable member removed from the oiling port locking / unlocking mechanism disengage the pin between the handle lock and the handle latch, and the bottom valve operating handle is unlocked. There is no risk of erroneous operation because it is configured to obtain That is, when the above oil types are different, the attachment / detachment member insertion hole provided in the handle lock and the insertion position of the leg portion of the attachment / detachment member inserted therein do not match, and the bottom valve operation handle is unlocked. Since it is not possible, it is impossible to open the handles of different oil types.

In addition, after refueling, lock the bottom valve operation handle, and when returning the detachable member pulled out from the handle lock to the predetermined lubrication port,
If you try to install it on the oil filler port of a different oil type, the position of the leg of the attachment / detachment member and the position of the engaging hole of the fixing member of the locking / unlocking mechanism provided at the oil filler port will not correspond, and I can't lift the lid and close the lid. Therefore,
It becomes impossible to lock the locking / unlocking mechanism, the operator is informed of the wrong operation, and there is no risk of returning the detachable member to the oil inlet of a different oil type.

Therefore, according to the device of the present invention, it is possible to always supply the predetermined oil in the tank truck to the predetermined lubrication port of the gas station. That is, the handle lock of the bottom valve operation handle of a predetermined oil type is unlocked by the detachable member removed from the predetermined oil injection port, and when refueling is completed, the handle lock of the bottom valve operation handle is locked and its attachment / detachment is performed. After returning the member to the locking / unlocking mechanism and confirming that it is a predetermined oiling port, it is a detachable member in the locking / unlocking mechanism of the oiling port to be refueled next, and the handle of the next bottom valve operation handle. Since the lock is unlocked, erroneous lubrication can be prevented from the viewpoint of work procedure. Therefore, as in the conventional case, the operator visually confirms and memorizes the display of the oil inlet and the bottom valve operation handle. In the present invention, a situation such as opening is not possible, and there is no risk of accidental refueling accident. In addition, if the tank truck driver opens the lid of the oil filler port for lubrication, the key for unlocking the bottom valve operation handle of the specific tank containing the oil to be lubricated at this filler port Since the parts can be obtained, the only key that the employee of the gas station or the driver of the tank truck has to carry is the lock key that locks the oil inlet and the lid. Eliminates the hassle and hassle of having to carry multiple types of keys at all times.

Furthermore, the operation of the bottom valve operation handle in the device of the present invention
The unlocking mechanism has a structure in which the handle lock is attached to the handle and the handle latch is inserted, so that the handle can be used in any shape, and locking / unlocking can be done with one touch by using the attachment / detachment member of the lubrication port. Also, oil leakage from the gland packing case below the handle can be easily checked.

[Brief description of drawings]

1 to 3 are side sectional views showing a locking / unlocking mechanism of a bottom valve operation handle formed on a tank upper floor of a tank truck. ,
FIG. 4 is a front sectional view and a plan view, and FIG. 4 is a perspective view showing a part of the internal mechanism thereof. FIG. 5 is a side sectional view showing a connection state between the tank lorry and the oil filling port of the oil tank of the gas station, and FIG. 6 is a perspective view of the rear end portion of the tank lorry. FIG. 7 is a perspective view showing a locked state of the locking / unlocking mechanism equipped in the oil filling port of the oil tank of the gas station, and FIG. 8 is a fixing member and a detachable member constituting the locking / unlocking mechanism. FIG. 9 is a front view showing a state in which the locking / unlocking mechanism cannot be closed and locked due to attachment / detachment members having different oil types. 1 ... Tank lorry, 2 ... Bottom valve operating handle 5 ... Oil reservoir oil filling port, 6 ... Locking / unlocking mechanism 9 ... Fixing member, 9c ... Engaging hole 10 ... Removable member, 10a ...... Legs 13 …… Lock lock fittings, 13b …… Tongues 15 …… Handle locks, 16a, 16b …… Slots 17 …… Handle latches, 17a, 17b …… Recesses 18 …… Pin holders, 19 …… Compression coil spring 20 …… pin, 21 …… back cover 21a …… long hole, 22 …… return spring 23 …… interlock spring 24 …… removable member fitting hole, 25 …… prevention spring

Claims (1)

[Scope of utility model registration request] Claims: 1. A specified oil, which is separately loaded in the tank of the tank / lorry, is supplied to a gasoline / fuel tank through an oil supply hose from an oil supply pipe led to the rear end or side of the tank / lorry.
In an oil supply device for supplying oil to a corresponding oil supply port of a stand, a connecting member is provided on an outer peripheral surface of the oil supply port, and an outer peripheral surface of a lid of the oil supply port is engaged with the connecting member to lock. And a mounting portion mounted on the outer peripheral surface of the oil filling port, a tongue piece protruding outward from the mounting portion, and a plurality of holes formed on the tongue piece. Is fitted between the fixing member having the engaging hole and the engaging member of the lid and the outer peripheral surface of the oil filling port, and extends over the connecting member to engage with the engaging hole. And a detachable member that has a leg portion and can be detached from the oil filling port when the lid is opened. The engaging position of the engaging hole and the leg portion of the detachable member is different for each fixing member. The other fixing member and the leg portion capable of engaging with the engaging hole of the fixing member at the engaging position. With a pair of locking / unlocking mechanism composed of one detachable member, the bottom valve operation handle of each oil type formed on the tank top floor of the tank / lorry has an outer peripheral surface of the base of the handle spindle. It consists of a lock fixing metal fitting that is attached and has a tongue protruding outward, and a box-shaped member with one surface open, the inner surface of the lower end of which is the tip of the tongue of the lock fixing metal and the inner surface of the upper end is close to the top of the handle. In the state where the handle lock is detachably attached to the handle and a plate member whose upper part is bent in an inverted U shape, the handle lock is inserted into a long hole formed in the upper end surface of the handle lock and one end thereof is engaged with the handle. The handle lock that has been stopped is provided, and the engaging / disengaging member is fitted to one side of the handle lock by changing the engaging position depending on each oil type for inserting the leg of the detachable member provided in the oil inlet. The insertion hole is provided, and the above-mentioned plate is attached to the inner surface on the other side of the handle lock. The pin that fits into the recess formed on the side surface of the handle latch is projectingly provided via a compression coil spring so that the pin can be engaged and disengaged by inserting and pressing the leg portion of the detachable member. A device to prevent accidental oil supply to the oil storage tank.