JP2721096B2 - Tank lorry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank lorry.

[0002]

2. Description of the Related Art The discharge ports of a tank lorry are usually provided at three positions, that is, left, right and rear, and are selectively used depending on the position of a lubrication pipe in a gas station.

[0003]

Therefore, when the lid of another discharge port is opened during lubrication and the main valve is opened, the oil is leaked because the outflow pipe is common and the oil flows out.

[0004] It is an object of the present invention to provide a tank lorry that informs of danger when two or more coupling lids are removed.

[Means for Solving the Problems] According to the tank lorry of the present invention, each of the outlets of an outflow pipe having a plurality of outlets connected to a plurality of hatches via a bottom valve is provided via a main valve. In a tank lorry in which a coupling is provided and a lid is provided in the coupling, a lid detachment sensor is provided in the coupling, and when a lid detachment signal is input from two or more lid detachment sensors, the bottom valve is closed and notified and stored. A tank lorry characterized by providing an erroneous operation detection means for performing the operation.

The erroneous operation detecting means is provided, for example, in the case where the number of lid detachable sensors is three, that is, the first, second, and third sensors, three AND sensors each connected to two of the three sensors. It is preferable to comprise a circuit, a notification unit, a valve driving unit, and a storage unit connected to the three AND circuits.

[0007]

In the tank lorry configured as described above, for example, when there are three lid detachable sensors, if the other lid is opened during lubrication, the AND circuit to which these two sensors are connected is turned on, and the alarm is issued. And close the open bottom valve,
In addition, the notified fact is stored.

[0008]

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

In FIG. 1, oil storage tanks T1 to T3 (hereinafter, collectively referred to by using a symbol T) are buried in a site A of a gas station, and lubrication pipes 1a to 1c (hereinafter, generally referred to by using a symbol 1). Is communicated to the ground.
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 (hereinafter, collectively referred to as 2) are provided at the tip of the lubrication pipe 1, and each of the couplings 2 is provided with an identification portion 3 described later.

On the other hand, the tank lorry R is provided with hatches H1 to H3 (hereinafter, the symbol H is used when collectively referred to). Is being loaded. These hatches H include bottom valves 4a to 4c (hereinafter, collectively referred to as 4) which are opened and closed by a bottom valve open button 34 and a bottom valve close button 35 of an operation panel 31, which will be described later, respectively. A bottom valve sensor (not shown) that detects opening and closing is provided. The outlet side of the bottom valve 4 is communicated with an outflow pipe 6, and couplings 7 a to 7 c (hereinafter collectively referred to as 7) are provided at the end and side of the outflow pipe 6. An oiling hose 8 is connected to a coupling 15 connected to the oil supply pipe. A coupling 9 connected to the coupling 2 of the oiling pipe 1 is provided at a tip of the oiling hose 8.

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

In FIG. 2, couplings 2 and 9 include:
A stopper 2A and a lever 9A for automatically locking the coupling 9 when the coupling 9 is inserted into the coupling 2 are provided.

The identification section 3 is supported by an arm 10 on the center axis of the coupling 2.

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 lubrication hose 8. At the tip of the wire 14, a piece 14a abutting on the identification unit 3
Is provided.

In FIG. 3, a passage 16 is formed in the coupling 7 so as to bend twice at right angles and open in the opposite direction. One of the openings 16a is connected to the outflow pipe 6, and the other opening 16b is connected to the cup 16 The ring 15 is connected.

The rod 2 is located on the center 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.
It is locked by. When the coupling 15 configured in the same manner as the coupling 9 is connected to the opening 16b, the rod 20 is pushed by the piece 14b, and the tip of the rod 20 projects to the chamber 18 side.

One permanent magnet 22 is embedded in the rod 20 on the chamber 18 side, and the permanent magnet 2 is mounted on the outer wall of the chamber 18.
2 is provided with a magnetic sensor 23 provided with a sensor unit 23a that can face the magnetic sensor 2.

On the other hand, a base valve 24 seated on the valve seat 19 is provided on the opening 16a side, and is urged by a return spring 25. The distal end of an arm 26 is in contact with the distal end of the valve rod 24a of the main valve 24, and the arm 26 is fixed to a valve operating rod 27 that is supported by the coupling 7;
A valve opening / closing handle 28 is fixed to the valve operating rod.

In FIG. 4, the opening 16 of the coupling 7 is shown.
b, a lid 29 for closing the opening 16b is provided. In this state, one end of the rod 20 is pushed by the central projection 29A of the lid 29, and the other end of the permanent magnet 22 is attached to the first sensor of the sensor unit 23a. 30a is to be detected,
The couplings 7b and 7c have lid-removable second and third sensors 30b and 30c (sensors 30a, 30b and 30 respectively).
c will be used hereinafter when collectively referred to as c). When the lid 29 is removed as shown in FIG. 3, the sensor 30 outputs an ON signal without facing the permanent magnet 22, and when the lid 29 is closed as shown in FIG.
The sensor 30 outputs an off signal facing the permanent magnet. Incidentally, reference numerals a, b, c and d in the drawing
Are sensors for high-octane identification, regular identification, light oil identification, and kerosene identification, respectively.

Returning to FIG. 1, an operation panel 31 is provided on the right front side of the tank lorry R. The operation panel 31 has hatch number and oil type display sections 32 and 33 as shown in FIG.
And bottom valve open buttons 34a, 34b, 3 of the bottom valves 4a to 4c.
4c and bottom valve close buttons 35a, 35b, 35c.

In FIG. 6, the control device 40 is provided with an erroneous operation detection circuit 41 as erroneous operation detection means.

The circuit 41 includes a first AND circuit 42a connected to the first sensor 30a and the second sensor 30b.
A second AND circuit 42b to which the second sensor 30b and the third sensor 30c are connected, and a third AND circuit 42c to which the third sensor 30c and the first sensor 30a are connected. AND circuits 42a to 42c
It is turned on when both input signals are on. The notification unit 43 to which the alarm 38 is connected, the bottom valve drive unit 44 to which the bottom valve 4 is connected, and the storage unit 45 are connected in parallel to the circuits 42a to 42c.

Next, the operation will be described.

The hatch number and the oil type are input to the control device 40 by, for example, an IC card, and the hatch number and the oil type are displayed on the hatch number display section 32 and the oil type display section 33 of the operation panel 31 based on the input. Seeds are displayed.

For lubrication, for example, the lid 29a of the coupling 7a is removed, and the coupling 15, the lubrication hoses 8 and 9 are removed.
For example, it is connected to the coupling 2a of the oil storage tank T1. Then, the rod 20 is moved toward the chamber 18 by the identification unit 3 via the signal transmission wire 14, the permanent magnet 22 is detected by the high-octane identification sensor a, and the oil type is identified as high-octane gasoline. Then, when the bottom valve open button 34a of the operation panel 31 is pressed, the bottom valve 4a is opened because the oil type matches high-octane gasoline. Therefore, when the valve opening / closing handle 38 is manually opened, lubrication is started. In this state, the lid attachment / detachment first sensor 30a is on.

During this lubrication, other couplings 7
When the lid 29b of b is removed, the lid detachable second sensor 30b is turned on. Therefore, the first AND circuit 42a of the erroneous operation detection circuit 41 is turned on, the notification unit 43 activates the alarm 38 to alert the operator, the bottom valve driving unit 44 closes the bottom valve 4a, and the storage unit 55 Remember that there was a fact of notification. Then, when the operator notices a mistake and closes the lid 29b, the second sensor 30b is turned off and the first AND circuit 42 is turned off.
a is turned off, and the operation of the alarm 38 is stopped. Then, when the bottom valve open button 34a of the operation panel 31 is pressed, lubrication is restarted. Then, when lubrication is over, the bottom valve close button 3
5a is pressed to close the bottom valve 4a, and the next hatch is lubricated.

[0028]

As described above, according to the present invention, the following excellent effects can be obtained. (A) If two or more coupling lids are removed, a danger is notified, so that safety can be improved. (B) Even if there is an erroneous operation, the bottom valve is closed. Therefore, even if the lid is removed and the main valve is opened due to the erroneous operation, a small amount of oil flows out. (C) Since the erroneous operation is stored, the operation of the tank lorry driver can be managed based on the stored operation.

[Brief description of the drawings]

FIG. 1 is a side view showing a tank lorry and a gas station implementing the present invention.

FIG. 2 is a side sectional view showing the vicinity of a lubrication port.

FIG. 3 is a side sectional view showing the periphery of a coupling of a lorry.

FIG. 4 is a side sectional view showing a state in which the lid of the coupling of the lorry is covered.

FIG. 5 is a front view of the operation panel.

FIG. 6 is an erroneous operation detection circuit diagram.

[Explanation of symbols]

 A: Site H1 to H3: Hatch R: Tank truck T1 to T3: Oil storage tank 1a to 1c: Lubrication pipe 2a to 2c: Coupling 3: Identification unit 4a to 4c ... Bottom valve 6 ... Outflow pipe 7a-7c ... Coupling 8 ... Lubricating hose 9 ... Coupling 10,12 ... Arm 14 ... Signal transmission wire 14a ... Piece 15 Coupling 16 Passage 16a, 16b Opening 17a, 17b Boss 18 Chamber 19 Valve seat 20 Rod 21 Return spring 22 ..Permanent magnet 23 ・ ・ ・ Magnetic sensor 23a ・ ・ ・ Sensor unit 24 ・ ・ ・ Main valve 24a ・ ・ ・ Valve rod 25 ・ ・ ・ Return spring 26 ・ ・ ・ Arm 27 ・ ・ ・ Valve operating rod 28 ・ ・ ・Valve open / close handle 9a-29c ... lid 29A ... protrusion 30a ... lid attachment / detachment first sensor 30b ... lid attachment / detachment second sensor 30c ... lid attachment / detachment third sensor 31 ... operation panel 32 ... Hatch number display part 33 ・ ・ ・ Oil type display part 34a-34c ・ ・ ・ Bottom valve open button 35a-35c ・ ・ ・ Bottom valve close button 38 ・ ・ ・ Alarm 40 ・ ・ ・ Control device 41 ・ ・ ・ Incorrect operation detection Circuit 42a: first AND circuit 42b: second AND circuit 42c: third AND circuit 43: notification unit 44: bottom valve driving unit 45: storage unit

Claims (1)

(57) [Claims] 1. A tank lorry in which a discharge valve having a plurality of discharge ports connected to a plurality of hatches via a bottom valve is provided with a coupling via a main valve at each discharge port, and the coupling is provided with a lid. 5. The tank lorry according to claim 1, wherein the coupling is provided with a lid attachment / detachment sensor, and when a lid detachment signal is input from two or more lid attachment / detachment sensors, an erroneous operation detecting means is provided for closing and notifying and storing the bottom valve.