JPH054676A - Tank truck - Google Patents

Abstract

PURPOSE:To provide an open/close valve at an oil injection port to reduce a mounted load and make the open/close valve serve both for preventing oil mixture and preventing overflow by providing a controller which st.ores an oil type in each hatch and actuates a driving means based on a signal from a valve open sensor. CONSTITUTION:If couplings 15, 9 at both ends at a hose 8 are connected to an unloading coupling 60 and couplings 2a to 2c of an oil injection port respectively, an end of a wire is in contact with an oil type identification label so that a mechanical signal indicated by the identification label is transmitted to the other end. A magnetic sensor converts the signal into an electric signal and transmits it to a level gage controller 50. The controller 50 compares the oil type signal from the magnetic sensor with stored oil type data to determine whether or not the oil types coincide with each other. If they coincide, the controller excites an electromagnetic clutch to enable an open/close valve to open. If they do not coincide, the controller does not excite the clutch to disable the valve from opening to automatically disable oil injection to prevent mixture of oil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank truck provided with an oil mixing prevention device for preventing oil mixing when unloading an oil storage tank of a gas station.

[0002]

With respect to such a device, the applicant of the present invention discloses in
In Japanese Patent No. 72904, an oil type identification member is provided at an oil filling port of an oil storage tank, and a valve for detecting the identification member in a lorry and controlling opening / closing via an electromagnetic clutch by an output of a vehicle-mounted microcomputer is provided at a tip of a common outflow pipe. It is provided.

[0003]

The above proposal is effective, however, since the valve that opens and closes by the electromagnetic clutch is provided on the lorry side, the in-vehicle device becomes heavier accordingly.

It is an object of the present invention to provide a tank truck that reduces the weight of in-vehicle equipment.

[0005]

According to the present invention, a valve opening sensor provided at the bottom valve opening / closing handle of each hatch, an unloading coupling provided at the tip of the common outflow pipe of each hatch, and An oil type identification member provided on the unloading coupling,
A drive unit that changes the identification oil type of the oil type member and a control device that stores the oil type for each hatch and operates the driving unit based on a signal from the valve open sensor are provided.

It is preferable that the oil type discriminating member is formed in a cam shape in which oil type discriminating pieces having different heights depending on the oil type are provided in a protruding manner, and the driving means is composed of a pulse motor for rotating the discriminating pieces. ..

Further, an opening / closing valve in which a valve actuating rod of a valve element and an opening / closing handle are connected to each other through an electromagnetic clutch is provided at the oil filling port, and the moving displacement of the signal transmission wire of the oil filling hose is converted into an electric signal at the opening / closing valve. The magnetic sensor is provided in the office, and the magnetic sensor is connected to the liquid level gauge control unit equipped with the oil type data storage unit and the oil type determination unit of each oil storage tank, and the on-off valve is output by the output of the control unit. It is preferable to excite the electromagnetic clutch.

Further, it is preferable that the on-off valve also has an overflow preventing function that closes when the oil level gauge control unit determines that the tank is full.

Further, it is preferable that a signal transmission wire is movably inserted into the oil supply hose of the oil storage tank, and a piece that comes into contact with the oil type identification piece is provided on the unloading coupling side.

[0010]

[Function] In the oil mixture prevention device configured as described above, when the couplings at both ends of the hose are unloaded and connected to the coupling and the coupling of the oil inlet, respectively, one end of the wire hits the oil type identification piece to identify A mechanical signal indicated by a piece is transmitted to the other end, and the magnetic sensor converts the signal into an electric signal and transmits it to the liquid level gauge control unit. Then, the control unit
The oil type signal from the magnetic sensor is compared with the stored oil type data to determine whether the oil types match, and if they match, the electromagnetic clutch is excited to open the open / close valve. If it does not match, the opening / closing valve cannot be opened without excitation and the oil mixture is automatically disabled to prevent oil mixing.

[0011]

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

In FIG. 1, oil storage tanks T1 to T3 (referred to as T in the following are used) are buried in a site A of a gas station, and oil supply pipes 1a to 1c (referred to as 1 in the following are used). Is connected to the ground by.
Then, for example, the tank T1 stores high-octane gasoline, the tank T2 stores regular gasoline, and the tank T3 stores light oil.

Couplings 2a to 2c (in the following, reference numeral 2 is used) are provided at the tip of the lubrication pipe 1, and the couplings 2 can be opened and closed by an electromagnetic clutch 31 described later. A body 24 is provided.

On the other hand, the tank truck R is provided with hatches H1 to H3 (in the following, the reference numeral H is used), for example, the hatch H1 is high-octane gasoline, the hatch H2 is regular gasoline, and the hatch H3 is light oil. It has been loaded. These hatches H have bottom valves 4a to 4c (hereinafter, referred to as reference numeral 4) which are opened and closed by an opening / closing handle 37, and valve opening sensors 5a to 5c (hereinafter collectively referred to as reference numeral 4) for detecting opening / closing of the bottom valve 4. In this case, reference numeral 5 is used). The outlet sides of the bottom valves 4 are communicated with the outflow pipe 6, and an end valve of the outflow pipe 6 is provided with a main valve 7 and an unloading coupling 60 including an oil type identification member 62 described later. There is. The coupling hose 8 is connected to the coupling 60 via the coupling 15, and the tip of the lubrication hose 8 is
A coupling 9 is provided which connects to the coupling 2 of the oil injection pipe 1.

Further, a control device 4 is provided in the cab of the Lori R.
0 is provided, and the control device 40 stores the cargo data, that is, the oil type of each hatch H. An alarm device 38 is provided on the roof.

On the other hand, the oil storage tanks T1 to T3 are provided with liquid level gauges 54a to 54c (reference numeral 54 is used in the following generic name). The liquid level gauge measuring parts 53a to 53c of the liquid level gauge 54 are respectively in the office B.
It is connected to a liquid level gauge control unit 50 provided inside.

In FIG. 2, the coupling 15 is provided with a stopper 60A and a lever 15A which automatically lock the coupling 15 when the coupling 15 is inserted into the unloading coupling 60.

On the other hand, a signal transmission wire 14 covered with a flexible protective tube 13 via an arm 12 is provided on the central axis of the oil supply hose 8. A piece 14 a that abuts on the oil type identification member 62 is provided at the tip of the wire 14. The main valve 7 is composed of an on-off valve having a valve opening handle 7a, and an unloading coupling 60 is provided at the end thereof. Inside the coupling 60, a cam-shaped oil type identification member 62 is provided in a plane including the axis, and is rotated by a pulse motor 63 which is a driving means.

In FIG. 3, the oil type identification member 62 identifies oil type identification pieces 62a, 62 having different heights for identifying high-octane gasoline, regular gasoline, light oil and kerosene.
b, 62c, and 62d are provided in a protruding manner.

In FIG. 4, the coupling 2 of the lubrication pipe 1
The passage 16 is bent twice at a right angle and opens in the opposite direction.
Is formed. One opening 16a is connected to the oil supply pipe 1, and the other opening 16b is connected to the coupling 9 of the oil supply hose 8.

The rod 2 is located on the central axis of the opening 16b.
0 is slidably provided on the boss portions 17a and 17b, and is urged outward by a return spring 21 interposed between the flange portion 20a and the boss portion 17a.
Is locked in. Then, when the coupling 9 configured similarly to the coupling 15 side is connected to the opening 16b, the rod 20 is pushed by the piece 14b, and the tip of the rod 20 projects toward the chamber 18 side.

One or more (five in the illustrated example) permanent magnets 22 are embedded in the chamber 18 side of the rod 20, and a sensor unit that can face the permanent magnets 22 is provided on the outer wall of the chamber 18. A magnetic sensor 23 provided with 23 a is provided, and the magnetic sensor 23 is connected to the liquid level gauge control unit 50.

On the other hand, on the side of the opening 16a, a valve element 24 seated on the valve seat 19 is provided, and is biased by a return spring 25. The tip end of an arm 26 is brought into contact with the tip of the valve rod 24a of the valve body 24, and the arm 26 is fixed to the valve operating rod 27.

In FIG. 5, the valve operating rod 27 has a boss portion 17
It is rotatably supported by c and a sleeve 29 rotatably inserted in the cover 28. A disc 30 is fixedly mounted on the valve operating rod 27, and the disc 30 and the sleeve 2 are
The flange 29a formed on the electromagnetic clutch 3
1 is connected. The electromagnetic clutch 31 is
It is connected to the liquid level gauge control unit 50.

A boss portion 32a of a valve opening / closing handle 32 is fixed to the outer end of the sleeve 29, and a torsion spring type return spring 33 is interposed between the handle 32 and the cover 28. There is. A long hole 32b is formed at the end of the handle 32, and the long hole 32b is
The other end of an L-shaped handle holding lever 34, which is a handle holding means having one end inserted through a through hole 32d formed in the protruding portion 32c of the handle 32, is inserted. The lever 34 is mounted on the spring 3 between the lever 32 and the protrusion 32c.
The end portion which is urged toward the sleeve 29 by 5 and protrudes from the through hole 32d can be inserted into and removed from the through hole 28a formed in the cover 28. Although not shown, the cover 2
Another through hole is formed in 8 to hold the handle 32 in the valve open position. Further, a transparent plate 36 is provided on the boss portion 32a of the handle 32, and a marking line 27a is engraved on the portion of the valve operating rod 27 facing the transparent plate 36 for visually checking the open / closed state of the valve body 24. There is.

In FIG. 6, the control device 40 is composed of a microcomputer, and is provided with a cargo data storage means 41 for storing cargo data, that is, oil type for each hatch. Then, based on the signals from the valve opening sensors 5a, 5b, 5c, the pulse motor 63 is rotationally controlled to direct the oil type identification pieces 62a to 62d corresponding to the oil type of the hatch to the coupling 15 side. ing.

In FIG. 7, the liquid level control unit 50 is composed of a microcomputer, and stores in the oil type data storage means 51 for storing the oil type data of the oil storage tank T, the oil type signal from the magnetic sensor 23 and the storage means 51. It judges whether or not it matches the stored oil type, and if there is a mismatch, the alarm 3
8 is activated, and when they match, the oil inlets 2a, 2
Oil type determination means 5 for actuating the electromagnetic clutch 31 of b and 2c
2 are provided, and liquid level measurement units 53a, 53b, 5
It is determined from the liquid level signal from 3c whether or not the tanks T1, T2 and T3 are full, and when it is determined that the tanks are full, the electromagnetic clutch 31 is demagnetized and the alarm 38 is activated. Means 56 are provided.

When lubricating, the coupling 15 is connected to the unloading coupling 60, the coupling 9 is connected to, for example, the coupling 2a, and the opening / closing handle 37 is turned to open the bottom valve 4a. Based on the signal from the valve opening sensor 5a, the pulse motor 63 is operated to rotate the oil type identification member 62, and the oil type identification piece 62a is coupled to the coupling 1
Turn to side 5. Therefore, the signal transmission wire 14 contacts the oil type identification piece 62a and moves to the coupling 2a side,
The rod 20 is projected into the chamber 18. Then, the sensor unit 23a of the magnetic sensor 23 detects the protruding and opposed permanent magnets 22 and outputs the detected number of electric signals to the liquid level gauge control unit 50 via the signal line. Then, the oil type determination unit 52 of the liquid level gauge control unit 50 compares the oil type data stored in the storage unit 51 with the oil type signal from the magnetic sensor 23, and the oil types of the tank T1 and the hatch H1. It is determined whether or not and the electromagnetic clutch 31 is excited when they are coincident (in the case of the illustration, they are coincident), and when they are not coincident, the electromagnetic clutch 31 is not excited and the alarm device is activated. Three
8 is activated and notified to prevent oil mixture.

Next, when the lever 34 is pulled and the valve opening / closing handle 32 is rotated from the through hole 32d, the valve 29 is rotated because the sleeve 29 is connected to the disk 30 by the excitation of the electromagnetic clutch 31. And arm 26
Is rotated to rightward the valve rod 24a, the valve body 24 is opened, and oil is supplied. At this time, the end portion of the lever 34 is locked in a through hole different from the through hole 28a to hold the valve opening / closing handle 32 in the valve open position. When the lubrication is finished, pull the lever 34 and return the valve opening / closing handle 32 to close the valve body 24 and close the coupling 15, 60 or the coupling 9, the opening / closing valve 2.
When removed, the rod 20 is returned to the position shown in the figure by the return spring 21.

When the liquid level signal from the liquid level measuring unit 53 input during lubrication is judged to be full by the full tank judging means 56, the electromagnetic clutch 31 is demagnetized and the valve body 24 is closed to prevent overflow. To do.

[0031]

Since the present invention is constructed as described above, it has the following effects.

(1) An on-off valve can be provided at the oil inlet to reduce the vehicle weight.

(2) The open / close valve can prevent both oil mixture and overflow.

[Brief description of drawings]

FIG. 1 is a side view showing a tank truck and a gas station in which the present invention is implemented.

FIG. 2 is a side sectional view showing the vicinity of an unloading coupling.

FIG. 3 is a front view showing an oil type identification member.

FIG. 4 is a side cross-sectional view showing the vicinity of an on-off valve.

FIG. 5 is a side sectional view showing an opening / closing mechanism of the opening / closing valve.

FIG. 6 is a control block diagram of a control device.

FIG. 7 is a control block diagram of a liquid level gauge control unit.

[Explanation of symbols]

 A ... Gas station B ... Office H1-H3 ... Hatch R ... Tank truck T1-T3 ... Oil storage tank 1a-1c ... Lubrication pipe 2a-2c ... Coupling 4a- 4c ... bottom valve 5a-5c ... valve open sensor 6 ... outflow pipe 8 ... lubrication hose 9,15 ... coupling 12 ... arm 13 ... protection tube 14 ... Signal transmission wire 14a ... Piece 16 ... Passage 20 ... Rod 21 ... Return spring 22 ... Permanent magnet 23 ... Magnetic sensor 23a ... Permanent magnet 24 ... Valve body 24a. ..Valve rod 25 ... Return spring 26 ... Arm 27 ... Valve operating rod 28 ... Cover 29 ... Sleeve 30 ... Disk 31 ... Electromagnetic clutch 32 ... Valve opening / closing handle 33 ... Return spring 34 ... Handle holding cover 38 ... Alarm device 40 ... Control device 50 ... Liquid level gauge control unit 53a to 53c ... Liquid level gauge measuring unit 54a to 54c ... Liquid level gauge 60 ... Unloading coupling 61 ... Case 62 ... Oil type identification member 62a-62d ... Oil type identification piece 63 ... Pulse motor

Claims (1)

Claims: 1. A valve opening sensor provided on a bottom valve opening / closing handle of each hatch, an unloading coupling provided at a tip of a common outflow pipe of each hatch, and the unloading cup. An oil type identification member provided on the ring, a drive unit for changing the identification oil type of the oil type member, and an oil type for each hatch is stored, and the drive unit is operated based on a signal from the valve open sensor. A tank truck that is provided with a control device.