JPH07330096A - Interlocking device of fuel truck - Google Patents

Abstract

PURPOSE:To surely prevent a fuel truck mainly from starting by mistake by a method wherein a self-holding circuit is set and a main brake is actuated by fuming ON a parking switch and a manual switch, and the storage state of oil feeding members is indicated. CONSTITUTION:In an interlocking device 16, a self-holding circuit 18 is set and a main brake actuation part 20 is actuated by turning ON a manual switch 17. With the actuation of a parking brake 21, a parking switch 22 is turned ON, and the storage state of oil feeding members is detected by a plurality of storage switches 27. The self-holding circuit 18 is set by turning ON the parking switch 22 and the manual switch 17 and this state is canceled by turning OFF the parking switch 22 and completing the storage state detection of the storage switches 27. In an indication device 41, a character indication corresponding to the storage state of the oil feeding members is conducted. In an indication control means 40, the indication device 41 is controlled on the basis of the detection result of the storage switches or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlock device for a fuel refueling vehicle. That is, the present invention relates to an interlock device in a fuel refueling vehicle such as a servicer that refuels an aircraft with fuel oil at an airport.

[0002]

2. Description of the Related Art In such a fueled vehicle, the fuel oil is
After passing through the oil supply piping where the oil supply equipment is arranged, for example, from above the lifter that can be moved up and down, with the oil supply hose,
Refuel aircraft parked at airport tarmacs. That is, at the time of refueling, the lifter mounts the worker and moves up to just below the refueling port of the aircraft, and the worker connects the nozzle of the tip of the refueling hose mounted on the vehicle to the refueling port of the aircraft to perform refueling work. It should be noted that the lifter is equipped in many fuel refueling vehicles for refueling work on a large aircraft having such a high refueling port position. Also, for such a fuel refueling vehicle,
A type that has a tank of fuel oil and supplies the fuel oil of the tank to the oil supply pipe by a pump onboard, and a type that does not have such a tank, that is, a hydrant refueling device on the airport side The fuel oil that has been pumped from the storage tank of the pump to the tarmac via the underground hydrant pipe is connected to the receiving hose on the vehicle and is fed to the refueling pipe for refueling, a so-called servicer. There are two types. The latter type of servicer is commonly used with hydrant refueling equipment at airports where large, heavily refueled aircraft depart.

[0003]

By the way, the following problems have been pointed out in such a conventional example. That is, such refueling work by a fuel refueling vehicle is generally performed by a worker on a lifter and a worker on the ground side / vehicle side, that is, a plurality of workers at different locations. Therefore, first, a certain worker is in a state of refueling work on a lifter that has been lifted, or a refueling work is completed, but the unfilled state in which the nozzle at the tip of the refueling hose is still connected to the refueling port of the aircraft, that is, refueling There is a possibility that other workers on the ground side / vehicle side may accidentally start the refueling vehicle when the hose is forgotten to be removed, or when the lifter is forgotten to be lowered and is not stored. . Further, in the case of a servicer, in addition to these, there is a possibility that the fueling vehicle may be accidentally started in an unstored state in which the receiving hose remains connected to the hydrant pipe and is forgotten to be removed.

In this way, if the refueling members such as the lifter, the refueling hose, and the receiving hose are not stored in the fuel refueling vehicle, the fuel refueling vehicle may be accidentally started. , It is pointed out that the following problems may occur. First, an accident that damages or damages the fuel filler of an aircraft, the lifter of a fuel tanker, the fuel hose, the receiving hose, the tip of the hydrant piping of the hydrant refueling device, etc. occurs. Oil leaks out to the outside instantly and is very dangerous. In addition, if the refueling opening of the aircraft is damaged or damaged as described above, the aircraft may not be able to depart, and if the fuel refueling vehicle is accidentally started with the lifter not stored, This could lead to an accident such as a lifter in the stowed state colliding with an airport facility or an accident such as a fuel tanker falling, which is very dangerous from these viewpoints.

In view of such circumstances, the present invention has been made to solve the problems of the above-mentioned conventional example. First, when the parking switch of the parking brake is turned on and the manual switch is turned on, When the self-holding circuit is set and the main brake is activated, and when the parking switch is off and the storage switch detects the stored state of the oil supply member, the self-holding circuit is released and the main brake is released. Since the display device displays the state of the refueling member in characters by the display control means, firstly, it is possible to surely prevent the fuel refueling vehicle from erroneously starting, and secondly, especially after the refueling work is completed. It is possible to quickly detect the unstored state of the fuel refueling vehicle. Thirdly, it is possible to promptly know if the refueling member comes off during traveling and becomes the unstored state. An object of the present invention is to propose a Turlock equipment.

[0006]

The technical means of the present invention for achieving this object are as follows. That is, this interlock device is used in a fuel refueling vehicle that refuels an aircraft with fuel oil via refueling devices. Then, the self-holding circuit that can be set by turning on the manual switch, the actuating part of the main brake that operates even when the self-holding circuit is set, and the self-holding circuit that is attached near the parking brake and turns on in that operating state. Parking switch and a storage switch attached near the refueling member for detecting the stored state or the non-stored state thereof. The self-holding circuit is set when the parking switch is turned on and the manual switch is turned on, and is released when the parking switch is turned off and the storage switch detects a storage state.

Further, the interlock device is further provided with a display device and a display control means together with them. The display device is arranged in a driver's cab or the like, and displays a character corresponding to at least a stored state or an unstored state of the refueling member, and the display control means reads the detection result of the storage switch or is read in advance. A display signal is sent to the display device based on the program.

[0008]

Since the present invention comprises such means, it operates as follows. First, when refueling work, in this interlock device, when the parking brake is actuated and the parking switch is turned on, and when the manual switch is turned on, the self-holding circuit is set and the main brake is actuated in the actuating portion. At the time of refueling work, the fuel refueling vehicle is disabled in this way, and refueling work is started. Next, the refueling work is completed, the parking brake is released, the parking switch is turned off, and the lifter,
When the refueling member such as the refueling hose is stored and the storage switch detects the stored state, the self-holding circuit is released from the set state and the operation portion deactivates the main brake. When the refueling work is completed, the fuel refueling vehicle is allowed to run in this way and is started. By the way, this interlock device is further provided with a display device and display control means thereof. Then, based on the detection result of the storage switch, the display device displays at least a character corresponding to the stored state or the unstored state of the refueling member via the display control means.

Therefore, firstly, by such an interlock device, it is possible to prevent the fuel refueling vehicle from being accidentally started while the refueling member is in the unstored state during the refueling operation or after the refueling operation is completed. . Secondly, particularly when the refueling member remains in the unstored state after the completion of the refueling work, this can be promptly found by the character display on the display device, and it can be immediately put into the stored state. Third,
Even if the refueling member comes off during traveling and is in the unstored state,
This can be promptly known by the character display on the display device, and the storage state can be immediately returned.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. FIG. 1 is an electric circuit diagram of an embodiment of the present invention, FIG. 2 (1) is an air circuit diagram of an operating portion of a main brake, and FIG. 2 (2) is a main portion thereof,
(1) of FIG. 3 is a side view of the servicer, (2) of FIG.
The figure is a perspective explanatory view.

First, referring to FIG. 3, a servicer, which is an example of a fuel refueling vehicle, will be described. In the servicer 1, the fuel oil from the hydrant refueling device 2 on the airport side is refueled to the aircraft 5 by the refueling hose 4 from the lifter 3 that is vertically movable after passing through the refueling equipment. To describe these in detail, the hydrant refueling device 2 is installed at the airport, and the fuel oil pumped from the storage tank of the hydrant is passed through the underground hydrant pipe 6 and then the underground pit near the tarmac. It reaches the hydrant valve 7 at the fuel filler port. Then, the tip of the intake hose 8 which is an intake hose mounted on the servicer 1 is coupled and connected to the hydrant valve 7 via a coupler or the like, and the fuel oil that has been pressure-fed is passed through the reception hose 8 and the swivel joint 9. , Is introduced into the oil supply pipe 11 of the machine room 10 of the servicer 1.

In the oil supply pipe 11 of the machine room 10 of the servicer 1, from the upstream side to the downstream side, oil supply equipment such as a stop valve, a strainer, a pressure control valve, a filter, a measuring instrument, a flow control valve, and a venturi are provided. They are provided in order. The fuel oil taken therein is filtered and cleaned by passing through the oil supply pipe 11 and the oil supply equipment as described above, and at the same time, a predetermined oil supply pressure, flow rate, flow rate, etc. are adjusted and controlled. .

After that, the fuel oil is fed through the refueling hose 4,
The nozzle 12 at the tip thereof is used to refuel the aircraft 5. That is, a lifter 3, which is a refueling worktable, is assembled to a machine room 10 of the servicer 1, for example, at a rear part of the machine room 10 by a lift mechanism 13. The worker 14 is lifted up to the position just below the fuel filler port 15 of the aircraft 5 parked at the station, and the worker 14 connects and connects the nozzle 12 at the tip of the fuel filler hose 4 mounted on the vehicle to the fuel filler port 15 of the aircraft 5 to perform the fuel filler work. I do. Lifter 3
Thus, many servicers 1 are equipped for refueling work on a large aircraft having the refueling port 15 at a high position. The fuel tank on the side of the aircraft 5 is generally divided into a plurality of tank chambers, and each tank chamber is connected to the fuel filler port 15 via their collecting pipes.

Next, referring to FIG. 1, the interlock device 16
Will be described. The interlock device 16 includes a self-holding circuit 18 that can be set by turning on a manual switch 17, and an actuating portion 20 of a main brake 19 that also operates when the self-holding circuit 18 is set.
(See FIG. 2, which will be described later) and the parking switch 22 attached to the parking brake 21 and turned on in its operating state.
And a storage switch such as a lifter switch 24, a nozzle switch 25, a receiving hose switch 26, etc., which is attached near the fueling member 23 such as the lifter 3, the oil supply hose 4, the receiving hose 8 and the like, and detects the stored state or the unstored state thereof. Two
7 and. Then, the self-holding circuit 18 turns on the manual switch 17 when the parking switch 22 is turned on.
Is turned on, the parking switch 22 is turned off, and when the storage switch 27 detects the stored state, the setting is released.

These will be described in detail below. First, 28 is a parking brake lever. The parking brake lever 28 is arranged in the driver's cab A (see FIG. 3) of the servicer 1 and manually operated to operate the wire 2
A parking brake 21, which is a side brake, that is, a parking brake, is activated and deactivated via 9. And
When the parking brake 21 is activated, the parking switch 22 and the operating force sensor switch 30 attached thereto are turned on, and when the parking brake 21 is deactivated, they are turned off.

Reference numeral 31 denotes a vehicle-mounted power source. Between the power source 31 and the operating force sensor switch 30, a fuse 32,
A circuit in which the manual switch 17, the relay coil 33, etc. are arranged is formed. The manual switch 17 is provided, for example, on the operation panel in the cab A, and is of a momentary type that is always off except when it is manually turned on. 34 is
The other end of the operation force sensor switch 30 is grounded. or,
Branched from between the manual switch 17 and the relay coil 33,
A circuit is formed to reach the parking switch 22 via the relay contact 35 and the relay coil 36. The relay contact 35 is normally open and the relay coil 33 is provided.
When is energized and excited, it switches to closed. Reference numeral 37 is a ground at the other end of the parking switch 22. Further, a relay contact 38 is arranged in parallel with the manual switch 17 and the relay contact 35. The relay contact 38 is normally open, and when the relay coil 36 is energized and excited, it is closed. Relay coil 36 and relay contact 3
A self-holding circuit 18 is constituted by 8. Further, the circuit is further branched immediately before the relay coil 36, and then connected in parallel to the solenoid valve 39 of the actuating portion 20 of the main brake 19 and the display control means 40 and the display device 41 of the cab A. . (Note that, in FIG. 1, each part surrounded by an imaginary line shows the inside of the cab A). Reference numeral 42 is a ground on the solenoid valve 39 side.

Further, a circuit is further branched from between the fuse 32 and the manual switch 17, and this circuit is branched again on the way, and on one side of the branch, a lifter switch 24 and a nozzle switch constituting a storage switch 27 are formed. 25, the receiving hose switch 26, and the relay coil 43 are sequentially arranged in series, and the other end serves as a ground 44. Along with this, a second lifter switch 45, a second nozzle switch 46, and a second receiving hose switch 47, which constitute the storage switch 27, are arranged in parallel to each other on the other side of the branch.
The other ends of these are respectively connected to the display control means 40 arranged in the cab A. The lifter switch 24, the nozzle switch 25, and the receiving hose switch 26 are respectively provided with the lifter 3, the fueling hose 4 with the nozzle 12, the receiving hose 8 and other refueling members 23 stored in the servicer 1.
The second lifter switch 45, the second nozzle switch 46, and the second receiving hose switch 47 are provided at the storage position where they are turned on and continue, and conversely, the lifter 3, the fuel supply hose 4 with the nozzle 12, and the receiving hose 4, respectively. Refueling member 23 such as 8
Is stored in the servicer 1, it turns off and disconnects. The lifter switch 24, the nozzle switch 25, the receiving hose switch 26, the second lifter switch 45, the second nozzle switch 46, the second receiving hose switch 47, etc. are respectively the lifter 3, the refueling hose 4, and the nozzle thereof. 12, a storage switch 27 for the oil supply member 23 such as the receiving hose 8 is configured, and the storage state or non-storage state of each fuel supply member 23 is detected by turning on / off the switch. In addition, between the relay coil 36 and the parking switch 22 described above, the relay coil 43, and the ground 44.
The release switch 48 and the relay contact 49 arranged in the driver's cab A are arranged in series, and the release switch 48 is normally closed, and the relay contact 49 is It is normally closed and switches to open when the relay coil 43 is energized and excited.

The interlock device 16 comprises such a circuit, for example, and is further provided with a predetermined display device 41 and display control means 40. The display device 41 is disposed in the operator's cab A or the like, and displays a character corresponding to at least the stored state or the unstored state of the refueling member 23, and the display control means 40 reads the detection result of the storage switch 27 or is read in advance. A display signal is sent to the display device 41 based on the stored program.

The display device 41 and the display control means 40 will be described in more detail. The display device 41 of the illustrated example displays characters corresponding to the stored state or the unstored state of the refueling member 23 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like, for example, the characters flow left and right even at night. Conduct with easy-to-read electronic display. In the illustrated example, in addition to this,
The state of the entire interlock device 16 and the state of the main brake 19 are also electronically displayed by corresponding character display. Various types of sentences are conceivable as such a character display mode. First, for example, "refueling member 23 is disengaged" or "refueling member 23 is not displayed" is displayed as a display during refueling work or immediately after refueling work is completed. "Stored", "Cannot drive", "Interlock is operating", "Main brake 19 is operating", and "Lifter 3 is up" for each of them, "Refueling hose 4 is disconnected"", The receiving hose 8 is disconnected," and so on. Then, although these character displays are appropriately selected and implemented, it is conceivable to adopt these character displays over time. On the other hand, as a display when all the fuel fillers 23 are in the retracted state, for example, "fuel filler 23
Can be stored "," ready to run "," interlock is released "," main brake 19 is released ", and so on. The display device 41 for displaying such characters is arranged in the driver's cab A or the like, for example, on the operation panel in the driver's cab A or on the outside of the driver's cab A door. Further, as the display control means 40, for example, a microcomputer is used, and the detection signals from the second lifter switch 45, the second nozzle switch 46, the second receiving hose switch 47, etc., which are the storage switches 27, are input, and the main brake is also applied. 19 working part 20
A signal is input in parallel with the solenoid valve 39 of. And the display control means 4 comprising a microcomputer
0 sends a display signal corresponding to various character display modes to the display device 41 on the basis of these detection results and the programs previously read. 50 in the figure
51 is earth.

Since the interlock device 16 is constructed as described above, it operates as follows. First, the servicer 1 is stopped, and the parking brake lever 28 is first operated to operate the parking brake 21, whereby the parking switch 22 and the operation force sensor switch 30 are turned on. When the parking brake 21 is actuated, the momentary type manual switch 17 is turned on from the state shown in the figure, so that the fuse 32 from the power source 31, the manually operated switch 17, the relay coil 33, and the operating force. The circuit reaching the sensor switch 30 is energized, and the relay coil 33
Is excited, so that its relay contact 35 switches from open to closed as shown. Therefore, the circuit from the power source 31 to the fuse 32, the closed relay contact 35, the relay coil 36, and the parking switch 22 is energized and the relay coil 36 is excited, so that the relay contact 38 changes from open to closed as shown in the figure. Switch. Therefore, from the power source 31, the fuse 32, the closed relay contact 38, the relay coil 3
6. While the circuit reaching the parking switch 22 is energized, the solenoid valve 39 is energized and energized by the circuit branched from the middle to switch to open, and the main brake 19 is actuated by the actuating portion 20 as described later. , The servicer 1 cannot run. At the same time, in the illustrated example, the display device 41 displays, via the display control means 40, the fact that the main brake 19 is in operation.

The self-holding circuit 18 of the interlock device 16 is composed of the relay coil 36 and the relay contact 38. That is, from the above,
When the parking switch 22 is turned on and the manual switch 17 is turned on, the relay coil 36 continues to be energized and excited, the relay contact 38 also keeps closed, and the self-holding circuit 18 is set in this way. The main brake 19 continues to be operated by the solenoid valve 39 and the operation unit 20. Since the manual switch 17 is of the momentary type and immediately returns to the off state after being turned on, the energization and excitation of the relay coil 33 are immediately released.
The relay contact 35 also switches to open.

At the same time, the lifter 3 assembled to the servicer 1 is lifted, the nozzle 12 of the refueling hose 4 mounted on the vehicle is connected to the refueling port 15 of the aircraft 5,
Further, the receiving hose 8 mounted on the vehicle is replaced with the hydrant pipe 6.
(See FIG. 3). In this way, the oil supply members 23 such as the lifter 3, the oil supply hose 4, and the receiving hose 8 are changed from the stored state to the used state, and the lifter switch 24, the nozzle switch 25, the receiving hose switch 26, and the like are stored correspondingly. The switch 27 is turned off as shown. On the other hand, the storage switches 27 such as the second lifter switch 45, the second nozzle switch 46, the second receiving hose switch 47, etc. are turned on to detect the unstored state as shown in the figure, so that the display control means 40 displays Device 41
Indicates that the lifter 3, refueling hose 4, receiving hose 8 and the like are in a non-stored state, that is, in a used state. Since the lifter switch 24, the nozzle switch 25, the receiving hose switch 26, etc. are off as described above, the relay coil 43 is not energized and excited, the relay contact 49 is kept closed as shown, and the normally closed release switch 48 is shown. The circuit leading to the ground 44 through the parking switch 2
It is energized similarly to the circuit up to 2.

Now, with the main brake 19 thus operating and the servicer 1 being stopped so that it cannot run,
Refueling work for the aircraft 5 by the servicer 1 is performed.
When the refueling work is completed, first, all the refueling members 23 such as the lifter 3, the refueling hose 4, the receiving hose 8 are stored in the servicer 1 from the use state, and the lifter switch 2
4, the storage switch 27 such as the nozzle switch 25 and the receiving hose switch 26 is switched from OFF to ON to detect the storage state. Therefore, the circuits from the power source 31 to the fuse 32, the lifter switch 24, the nozzle switch 25, the receiving hose switch 26, and the relay coil 43, which are turned on, are energized and the relay coil 43 is excited, so that the relay contact 49 is illustrated. Switch from closed to open. At the same time, when the refueling work is completed, the parking brake lever 28 is operated, the parking brake 21 is deactivated, and the parking switch 22 and the operating force sensor switch 30 are turned off. Note that the storage switches 27, such as the second lifter switch 45, the second nozzle switch 46, and the second receiving hose switch 47, are turned on as illustrated as the refueling member 23 such as the lifter 3, the oil supply hose 4, and the receiving hose 8 is stored. The storage device is turned off to detect the storage state, and the display device 41 displays the storage state as a character via the display control means 40.

In the interlock device 16, the parking switch 22 is turned off, the lifter switch 24, the nozzle switch 25,
When the storage switch 27 such as the receiving hose switch 26 is turned on to open the relay contact 49, the self-holding circuit 18 is released. That is, when the parking switch 22 is turned off and the relay contact 49 is opened, the excitation of the relay coil 36 is released, the relay contact 38 is switched from the illustrated closed state to the open state, and the self-holding is released. In this way, the self-holding circuit 18 is released from the set, and the power source 31
To fuse 32, relay contact 38, relay coil 3
6. The circuit to the parking switch 22 and the circuit to the release switch 48 and the relay contact 49 are cut off from the power supply, and the circuit to the solenoid valve 39 of the operating unit 20 is cut off from the power supply. As a result, the solenoid valve 39 is closed, the main brake 19 is deactivated by the actuating portion 20, the servicer 1 is allowed to run, and the display device 41 displays the message to the effect via the display control means 40.

In this interlock device 16,
In this way, the lifter 3, refueling hose 4, receiving hose 8
If all or any one of the refueling members 23 such as is not stored, the main brake 19 is not deactivated even if the parking brake lever 28 is operated and the parking brake 21 is deactivated. Has become. That is, in this case, the relay coil 43
Is not energized and excited, and the relay contact 49 is kept closed, so that even if the parking switch 22 is turned off, the relay coil 36 continues to be energized and excited, and the relay contact 38 is kept closed. , The self-holding circuit 18 remains set. In this way, the self-holding circuit 18 is not released from the set state, and the solenoid valve 39
Is continuously energized and excited and remains open, the main brake 19 is operated by the operating portion 20, and the servicer 1 is still unable to run even if the parking brake 21 is released. And in this case, the refueling member 2 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like which are not stored
For No. 3, the display control means 40 displays a character indicating that the display device 41 is in the non-stored state. The interlock device 16 has such a configuration.

Here, according to the air circuit diagram of FIG.
The operating portion 20 of the main brake 19 will be described. 52
Is a brake petal in the driver's seat, and when it is pressed, the brake valve 53 at the rear or front is switched from closed to open, and compressed air from the rear air tank or the front air tank (not shown) is respectively caused by the air circuit. ,
It is designed to flow to a double check valve 54 at the rear or front. On the other hand, such a brake petal 5
Even if the solenoid valve 39 is energized and excited to switch from the closed state to the open state irrespective of the number 2 or the brake valve 53, the compressed air from the air tank 55 is doubled in the rear or front by the air circuits. It flows to the check valve 54.

The compressed air flowing to the rear or front double check valve 54 by these is guided to the pilot 57 (see FIG. 2 (2) of FIG. 2) of the rear or front relay valve 56, and its air pressure is increased. Thus, the relay valves 56 are switched from closed to open. When the rear or front relay valve 56 is switched to open, the compressed air from the rear air tank or the front air tank flows to the rear or front brake chamber 58 by the air circuits. Working part 20
Then, the main brake 19 is operated in this manner.

On the other hand, when the brake petal 52 is released and the rear or front brake valve 53 is closed to the rear air tank or the front air tank, the rear or front relay valve 56 is opened by the air circuit. The compressed air of the pilot 57 of
The air is exhausted from the brake valve 53 via the double check valve 54. On the other hand, when the solenoid valve 39 is de-energized and deenergized and closed to the air tank 55, the compressed air of the pilot 57 of the rear or front relay valve 56 is changed to the double check valve 54 by the air circuit. It is exhausted from the solenoid valve 39 via the.

As a result, when the compressed air from the pilot 57 of the rear or front relay valve 56 is exhausted,
Each relay valve 56 switches from open to closed for the rear air tank and the front air tank,
Compressed air in the brake chamber 58 is exhausted from the relay valve 56 (see (2) in FIG. 2). In the operating portion 20, the operation of the main brake 19 is released in this way.

The interlock device 16 is as described above. Then it becomes as follows. In the servicer 1 which is an example of a fuel refueling vehicle, the fuel oil taken in from the hydrant pipe 6 of the hydrant refueling device 2 via the receiving hose 8 passes through the refueling equipment, and then from the lifter 3 that is vertically movable, Aircraft 5 with refueling hose 4
Is refueled from the refueling port 15 (see FIG. 3). In such a refueling operation, in the interlock device 16, when the parking brake 21 of the servicer 1 is operated to turn on the attached parking switch 22 and the manual switch 17 is turned on, the relay coil 3 is temporarily turned on.
3 is energized and energized to close the relay contact 35, the relay coil 36 is energized and energized to close the relay contact 38, the self-holding circuit 18 is set, and the solenoid valve 39 is switched, and the operating portion is operated. The main brake 19 is activated at 20 (see FIG. 1, etc.). In this way, the servicer 1 is disabled and the refueling work is started.

When the refueling work is completed, the parking brake 21 is deactivated, the parking switch 22 is turned off, and the refueling member 23 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like is stored in the servicer 1, When the storage switches 27 such as the lifter switch 24, the nozzle switch 25, and the receiving hose switch 26 are turned on and the storage states thereof are detected, the relay coil 36 is deenergized, the relay contact 38 is opened, and the self-holding circuit 18 is released. Then, the solenoid valve 39 is switched,
The operation of the main brake 19 is released by the operation unit 20 (see FIG. 1 and the like). When the refueling work is completed, the servicer 1 is thus ready to travel and is started.

At the same time, the interlock device 16
A display device 41 and its display control means 40 are provided in the display device. Then, based on the detection results of the storage switch 27, the second lifter switch 45 in the illustrated example, the second nozzle switch 46, the second receiving hose switch 47, etc., the display device 41 causes the lifter 3, the refueling hose 4 to display through the display control means 40. The character display corresponding to the stored state or the non-stored state of the oil supply member 23 such as the receiving hose 8 is performed including the character display of the entire state of the interlock device 16 and the state of the main brake 19 (see FIG. 1). Therefore, according to the interlock device 16 of the servicer 1, the following first, second, and third aspects are obtained.

First, the servicer 1 as an example of this fuel tanker vehicle has two conditions, that is, the parking switch 22 is turned off and the storage switch 27 such as the lifter switch 24, the nozzle switch 25, and the receiving hose switch 26 is turned on. Only when it is satisfied, the main brake 19 is released and the vehicle can run. Therefore, such an interlock device 16
Thus, the refueling member 2 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like can be provided during the refueling work or after the refueling work is completed.
It is possible to prevent the servicer 1 from erroneously starting while the device 3 is not stored.

Further, the servicer 1 becomes unable to travel for the first time when the main brake 19 is activated when the two conditions of the ON state of the parking switch 22 and the ON operation of the manual switch 17 are satisfied. Then, the main brake 19 is released and the vehicle can be driven only when two conditions, that is, turning off the parking switch 22 and turning on the storage switch 27 such as the lifter switch 24, the nozzle switch 25, and the receiving hose switch 26, are satisfied. . Therefore, for example, the main brake 19 is not accidentally actuated by the interlock device 16 while traveling, and sudden braking is not accidentally applied when unnecessary. Thus, the interlock device 16 is reliable and safe in its operation.

Second, especially after the refueling work is completed, the refueling member 2 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like.
If No. 3 is still in the unstored state, it can be quickly found and known by the corresponding character display on the display device 41. That is, which refueling member 23 is not stored can be easily monitored in the cab A or the like by the character display on the display device 41. Therefore, it is possible to immediately bring the unfilled refueling member 23 into the retracted state, especially after the refueling work is completed, and the above-mentioned first false start can be reliably prevented from this aspect as well.

Thirdly, the refueling member 2 such as the lifter 3, the refueling hose 4, the receiving hose 8 and the like due to vibration or the like during traveling.
Even when 3 is out of the storage state and is in the non-storage state, this can be quickly found and known by the corresponding character display of the display device 41. That is, which refueling member 23 has come off can be easily monitored in the cab A or the like by the character display on the display device 41. Therefore, it becomes possible to immediately return the unfilled refueling member 23 to the original stored state.

First, in the illustrated embodiment, in the oil supply member 23 such as the lifter 3, the oil supply hose 4, and the receiving hose 8,
Lifter switch 2 that turns on in its stored state
4, storage switches 27 such as a nozzle switch 25 and a receiving hose switch 26 are provided, and turning on all of the storage switches 27 is a condition for releasing the setting of the self-holding circuit 18 of the interlock device 16. However, the present invention is not limited to the illustrated embodiment. For example, first, the refueling member 23 may be something other than the lifter 3, the refueling hose 4, and the receiving hose 8, and such another refueling member 23 is provided with the storage switch 27 that is turned on in the stored state. May be. In addition, such other refueling member 23 and the storage switch 2
7 and the above-mentioned three refueling members 23 and the storage switch 27.
All or part of the above may be selectively combined and used. Of course, the refueling member 23 and the storage switch 27
As one of the lifter 3, the oil supply hose 4, and the receiving hose 8, and any one of the lifter switch 24, the nozzle switch 25, and the receiving hose switch 26 may be selectively used. . Then, turning on the storage switch 27 of the oil supply member 23 in which such various combinations can be considered may be a condition for releasing the setting of the self-holding circuit 18 of the interlock device 16.

Secondly, in response to these, the refueling member 23 whose characters are displayed on the display device 41 via the display control means 40 is not limited to the illustrated embodiment, and various combinations and the like are possible. Can be adopted. That is, the refueling member 23 and the storage switch 27 to which a signal corresponding to the stored state or the non-stored state is sent to the display control means 40 are not limited to those of the illustrated embodiment, and according to the above description, Combinations with other refueling members 23, one or two selective combinations, and the like are possible. In the illustrated embodiment, the storage switch 27 that sends a signal to the display control means 40 includes the second lifter switch 45 and the second lifter switch 45.
Although the nozzle switch 46, the second receiving hose switch 47, etc. were provided, a signal is sent from the lifter switch 24, the nozzle switch 25, the receiving hose switch 26, etc. to the display control means 40 regardless of the illustrated embodiment. It may be transmitted.

Thirdly, in the interlock device 16 of the illustrated embodiment, the self-holding circuit 18 is composed of the relay coil 36 and the relay contact 38, and the electric circuit shown in FIG. 1 is adopted. Is not limited to this. For example, a microcomputer is adopted as the interlock device 16 and a manual switch 17 and a parking switch 2 are provided in the microcomputer.
2. The ON / OFF signal from the storage switch 27 or the like is input and stored, and the microcomputer sends an operation signal or an operation release signal to the operation unit 20 based on a pre-read program to control the main brake 19. You may do it. In addition, a signal is sent from such a microcomputer to the display control means 40, and further,
Such a microcomputer is the display control means 40.
It is also possible to do so.

Fourthly, in the illustrated embodiment, the servicer 1 is shown as an example of the fuel refueling vehicle, but the present invention is not limited to this, and the hydrant refueling device 2 is used.
Unlike the servicer 1 having a receiving hose 8 to the tank, a tank is mounted, and the fuel oil loaded in this tank is supplied to the oil supply pipe 11 of the machine room 10 by an on-vehicle pump to supply oil. Of course, it can be applied to a fuel refueling vehicle.

Fifth, the release switch 48 in FIG. 1 is normally closed, and is manually operated and opened in an emergency. That is, the lifter switch 24, the nozzle switch 25, the receiving hose switch 26, the relay coil 43, the relay contact 49, and the like fail for some reason, and the self-holding circuit 18 described above is not released from the set state, so that the actuating portion 20 is activated. When the main brake 19 continues to be operated unnecessarily, the release switch 48 is manually operated and opened. Therefore, when the parking switch 22 is turned off,
By opening the release switch 48 in place of the relay contact 49, the set of the self-holding circuit 18 is released, the solenoid valve 39 is switched, and the operation portion 20 releases the operation of the main brake 19.

[0042]

As described above, when the parking switch of the parking brake is turned on and the manual switch is turned on, the interlock device for a fuel-fueled vehicle according to the present invention sets the self-holding circuit and sets the main brake. When the parking switch is turned off and the storage switch detects the storage state of the oil supply member, the self-holding circuit is released and the main brake is released.
The display control means causes the display device to display the state of the refueling member and the like in characters, so that the following effects are exhibited.

First, erroneous starting of the fuel tanker vehicle is prevented. In other words, during refueling work and after refueling work,
It is possible to prevent the fuel refueling vehicle from being accidentally started while the lifter, refueling hose, receiving hose, etc., which are refueling members, are not stored. Therefore, damage and damage to the fuel filler of the aircraft, the lifter of the fuel tanker, the fuel supply hose, the receiving hose, the tip of the hydrant piping of the hydrant fueling device, etc. can be avoided, and the high pressure and large amount of fuel oil that has been pumped can be avoided. The risk of leaking to the outside and overflowing is also avoided. Further, in the case where the fuel filler of the aircraft is damaged or damaged, it is possible to prevent the aircraft from being unable to depart, and to prevent the lifter from erroneously starting in the unstored state. Accidents such as collisions with airport facilities and falls of fuel tankers can be avoided. In this way, various safety is improved in this fuel-fueled vehicle.

Secondly, especially after the refueling work is completed, etc.
The unfilled state of the refueling member can be quickly found. In other words, if the lifter, refueling hose, receiving hose, etc., which are refueling members, are not stored after the completion of refueling work, etc., it is possible to quickly find and know this in the cab, etc. by the display device. It becomes possible to immediately bring the unfilled refueling member into the retracted state, and from this aspect as well, the erroneous start-up and the accident described in the above-mentioned item 1 can be reliably prevented.

Thirdly, even when the oil supply member comes off during traveling and becomes unstored, this can be promptly known. That is, a lifter that is a refueling member, a refueling hose,
Even if the receiving hose, etc. comes out of the stored state during traveling and becomes unstored, the display device displays
Since this can be promptly found and known, it becomes possible to immediately return the unfilled refueling member to the retracted state, and from this aspect as well, the accident and the like described in the above-mentioned first is surely prevented. As described above, the effects of the present invention are remarkably large, such as the problems existing in this type of conventional example are eliminated.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of an interlock device for a fuel tank vehicle according to the present invention.

FIG. 2 is an air circuit diagram of an operating portion of a main brake,
The figure (1) shows the whole, and the figure (2) shows the main part.

3A and 3B show a refueling state by a servicer, FIG. 1A is a side view, and FIG. 2B is a perspective view.

[Explanation of symbols]

 1 Servicer (fuel refueling vehicle) 3 Lifter (refueling member) 4 Refueling hose (refueling member) 5 Aircraft 8 Receiving hose (refueling member) 16 Interlock device 17 Manual switch 18 Self-holding circuit 19 Main brake 20 Actuator 21 Parking brake 22 Parking switch 23 Refueling member 24 Lifter switch (storage switch) 25 Nozzle switch (storage switch) 26 Receiving hose switch (storage switch) 27 Storage switch 40 Display control means 41 Display device 45 Second lifter switch (storage switch) 46 Second nozzle Switch (storage switch) 47 2nd receiving hose switch (storage switch) A Driver's cab

Claims (1)

[Claims] 1. An interlock device for a fuel refueling vehicle that refuels an aircraft via refueling equipment, comprising: a self-holding circuit that can be set when a manual switch is turned on; The operation part of the main brake that operates even when the holding circuit is set, the parking switch that is attached near the parking brake and is on in that operating state, and the storage state that is attached near the refueling member and its stored state is detected. A storage switch, the self-holding circuit being set when the parking switch is turned on and the manual switch is turned on,
Further, when the parking switch is turned off and the storage switch detects the storage state, the set is released, and together with these, a display device and a display control means are provided. The character display corresponding to at least the stored state or the unstored state of the refueling member is provided in the driver's cab or the like, and the display control means displays the character based on the detection result of the storage switch or a pre-read program. An interlock device for a fuel refueling vehicle, wherein a display signal is transmitted to a display device.