JPH01204897A - Fuel supply car - Google Patents

Abstract

PURPOSE:To make oiling control performable at an optical spot by making an operating lever, controlling the rotational frequency of an engine to drive an oil pump, so as to be operated by an air cylinder, branching off an air pipeline for this cylinder into plural numbers, and installing each pressure regulating valve in these branched pipelines. CONSTITUTION:When oiling to aircraft A or the like from a tank T of a fuel supply car, first an air on-off valve 8 is opened or closed, and thereby air pressure out of an air source 5 of a compressor or the like is fed to a oil feeding on-off valve 10, selecting this valve 10 from 'close' to 'open', while the air pressure is fed to the side of a pressure regulating valve 11 set up in optional spots. Then, the air pressure regulated by this pressure regulating valve 11 is gradually led into a cylinder 9 with a positioner via a throttle valve at the outset, and after the elapse of setting time (about 3-4sec) by an air timer 7, it is directly led into this cylinder 9 via a selector valve 13 opened. With this constitution, the cylinder 9 is operated in corresponding to the inputted air pressure is rotated, and rotational frequency of an engine 1, namely, discharge of a pump 15 is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a refueling vehicle that supplies fuel oil to aircraft, for example. That is, the present invention relates to a refueling vehicle in which a pump provided in a refueling pipe from a tank is driven by an engine.

``Prior Art'' In this type of refueling vehicle, engine rotation control during refueling is performed as shown in the explanatory diagram of FIG.

That is, a control lever 2 attached to the engine 1 and a control lever 3 provided at an appropriate location on the vehicle at a distance from the control lever 2 are connected by a wire 4 or a rond.

Then, by operating the control lever 3, the operating lever 2 is operated via the wire 4 etc., thereby controlling the rotational speed of the engine 1 to the optimum value for refueling, so that the pump driven by the engine 1 adjusts the appropriate flow rate. It was supposed to supply fuel oil.

"Problems to be Solved by the Invention" By the way, such conventional refueling vehicles have the following problems. Second. Third. A fourth problem was pointed out.

First, there was a problem in that the number of control levers 3 was severely limited. That is, since the control lever 2 attached to the engine 1 is mechanically and remotely controlled by the control lever 3 via a wire 4 or the like, it is not possible to increase the number of such control levers 3 and provide them at various locations on the vehicle. , was considered extremely difficult.

On the other hand, in fuel-fueled vehicles, there has been a stronger desire than ever to control the rotation of the engine at various locations on the vehicle. For example, the rotation of the engine 1 can be controlled at any convenient location during refueling, such as on a tank mounted on the vehicle, on a lifter mounted on the vehicle as a refueling platform, or even at the rear or side of the vehicle. For example, work efficiency would be significantly improved.

First, this problem was pointed out.

Secondly, when refueling work is temporarily interrupted midway and restarted later, it is necessary to control the rotation of the engine 1 from the beginning again, which has led to poor work efficiency.

That is, for example, when one of the fuel tanks of an aircraft to be refueled becomes full, refueling is often interrupted and then refueled again in another empty fuel tank. Furthermore, for example, there are many cases where a request for additional refueling is made after the predetermined refueling amount has been reached and the refueling has been completed.

Such an interruption is performed by releasing the set control lever 3 at the same time as the end.

Therefore, it has been pointed out that there is a problem in that when restarting after an interruption, the rotation speed of the engine 1, which has been previously reduced, must be re-controlled by setting the control lever 3 again to return it to the optimum value.

Secondly, this problem was pointed out.

Thirdly, such rotational control of the engine 1 and opening/closing of the refueling on/off valve that opens and closes the refueling pipe from the tank have been performed separately. Therefore, it is necessary to perform these separate operations especially when starting, interrupting, and ending refueling, which is time-consuming and troublesome, and from this aspect as well, poor work efficiency has been a problem.

Third, this problem was pointed out.

Fourthly, it is difficult to set the start-up time of the rotation of the engine 1, which poses a problem.

In other words, for example, the refueling on/off valve installed in the refueling pipe mentioned above usually takes 3 to 4 seconds to actually open after being opened, but if the engine 1 is operated at the same time.
If the rotation speed increases rapidly without taking time to rise,
A situation occurs in which the pump is driven before the refueling on/off valve is completely opened, and a large load is placed on the refueling pipe. And engine 1. Since this may lead to accidents that damage the pump or other parts, it has conventionally been required to set an appropriate startup time for the engine 1.

Fourth, this problem was pointed out.

In the conventional example, such a point was pointed out.

In view of these circumstances, the present invention has been made in order to solve the problems of the above-mentioned conventional examples. According to the invention of claim 1, by controlling the rotation of the engine during refueling using an air operation method, control can be performed from various locations on the vehicle using the pressure regulating valve, and the refueling operation can be interrupted and restarted after the fact. The purpose of this invention is to propose a refueling vehicle that does not require rotation control in such cases. A further object of the invention is to propose a refueling vehicle in which the air on-off valve of the air pipe is linked with the refueling on-off valve of the refueling pipe. Furthermore, the invention of claim 3 proposes a refueling vehicle that is equipped with a predetermined switching valve, a throttle valve, etc. in such an air pipe, thereby making it possible to set the start-up time of engine rotation. With the goal.

``Means for solving the problem'' The technical means of zero invention to achieve this purpose are as follows.

First, claim 1 is as follows.

The refueling vehicle according to claim 1 includes the following air piping, pressure regulating valve, cylinder with positioner, engine, and pump.

The air piping is branched midway from the air source and both reach a cylinder with a positioner.

A pressure regulating valve is provided on one of the branched air pipes.

In the cylinder with a positioner, a piston rod is moved forward and backward in response to air pressure from the pressure regulating valve.

In the engine, an operating lever is connected to the piston rod, and by operating the lever by moving the piston rod forward and backward,
It consists of an in-vehicle device whose rotation is controlled.

The pump is driven by the engine and is provided in the oil supply pipe from the tank.

Claim 1 is as follows.

Claim 2 is as follows.

The refueling vehicle according to a second aspect of the present invention further includes the following air on-off valve and refueling on-off valve in addition to the above-mentioned means of the first aspect.

The air on/off valve is provided in the air piping upstream of the pressure regulating valve.

The oil supply on-off valve is opened and closed by an air pipe further branched between the air on-off valve and the pressure regulating valve.

The oil supply on/off valve is provided downstream of the pump in the oil supply piping from the tank.

Claim 2 is as follows.

Claim 3 is as follows.

In addition to the above-mentioned means of claim 1, the refueling vehicle according to claim 3 further includes the following air opening/closing valve, switching valve, and throttle valve.

The air on/off valve is provided in the air piping upstream of the pressure regulating valve.

The switching valve and the throttle valve are provided in parallel in an air pipe between the pressure regulating valve and the cylinder with a positioner.

The switching valve is set to open after a predetermined period of time has elapsed since the air opening/closing valve was opened.

"Function" Since the refueling vehicle according to the present invention is comprised of such means, it functions as follows.

Claim 1 is as follows.

When refueling an aircraft or the like from a refueling vehicle, engine rotation control is first performed.

That is, the air pressure is adjusted by operating a pressure regulating valve provided in the air pipe. Then, in response to the air pressure, the piston rod of the cylinder with a positioner is moved forward and backward, and the operating lever is operated. In this way, the rotational speed of the engine is controlled to the optimal value for the oil supply, etc., so that the pump can supply oil at an appropriate flow rate.

In this way, air operation is performed instead of mechanical,
A large number of pressure regulating valves can be provided at various locations on the vehicle. Therefore, it becomes possible to appropriately control the rotation of the engine at various locations on the vehicle. In addition, when refueling work is temporarily interrupted and restarted after the fact, there is no need to operate the pressure regulating valve, and the air pressure that was operated and adjusted in advance will be automatically restored, and the pressure regulating valve will restart the rotation from the beginning. No control is required.

This is the case with claim 1.

Claim 2 is as follows.

That is, the refueling on/off valve of the oil supply pipe is linked to the air on/off valve of the air pipe through a branched air pipe.

Therefore, when starting, interrupting, and ending refueling, the air on-off valves can be opened and closed at the same time without requiring separate operations.

This is the case with claim 2.

Claim 3 is as follows.

That is, when the air opening/closing valve of such an air pipe is opened, the air pressure from the pressure regulating valve gradually reaches the positioner-equipped cylinder via the throttle valve since the switching valve is initially closed. When a predetermined period of time has elapsed since the air on-off valve was opened, the air pressure from the pressure regulating valve directly reaches the positioner-equipped cylinder via the opened switching valve.

In this way, it becomes possible to appropriately set the start-up time of engine rotation.

This is the case with claim 3.

"Example" The present invention will be described below based on the example shown in the drawings.

FIG. 1 is a system diagram of conduits, etc., showing an embodiment of a refueling vehicle according to the present invention. FIG. 3 is a schematic explanatory diagram of a refueling vehicle, etc.

First, the air piping etc. in the illustrated example will be described.

5 is an air source such as a compressor, and this air a5
The air piping 6 from the air pipe 6 is first branched to the air timer 7, and then is broadly branched into two parts in the middle.

One of the branched air pipes 6 is directed toward an air on-off valve 8 which is a dead man switch. The other branched air pipe 6 is directly connected to the cylinder 9 with a positioner.
It has reached this point.

The air piping 6 that has passed through the air on-off valve 8 is further branched to the air piping 6° for air signals for opening and closing toward the refueling on-off valve 10, which is a detsman valve, and then further branched to the air piping 6° for air signals for opening and closing, and then for air signals for starting operation to the air timer 7. It has been branched out as In the illustrated example, the air piping 6 is connected in parallel to three pressure regulating valves 11, each of which is connected via a check valve 12, and then integrated.

The air pipe 6 then passes through a switching valve 13 and a throttle valve 14 which are provided in parallel, and then reaches a cylinder 9 with a positioner.

Note that the air pipe 6 that has passed through the air timer 7 reaches a switching valve 13 for use as an air signal for switching.

The air piping 6 and the like in the illustrated example are configured as described above.

Next, the pressure regulating valve 11, etc., the switching valve 13, etc., and the cylinder with positioner 9. The engine 1, pump 15, and refueling on/off valve 10 will be described in detail.

First, the pressure regulating valve 11 and the like will be described.

The air regulator that spans the pressure regulating valve is 3 in the illustrated example.
However, there is no limit to the number, and it is also possible to provide a larger number at various locations on the vehicle.

Also, the check pulp that spans the check valve 1 attached to each pressure regulating valve 11 functions so that when one pressure regulating valve 11 is used, the remaining pressure regulating valves 11 are not affected by the air pressure. Note that instead of this check valve 12, a dedicated switching valve may be used, and each valve may be provided in the air pipe 6 immediately in front of the pressure regulating valve 11.

The pressure regulating valve 11 and the like are configured as described above.

Next, the switching valve 13 and the like will be described.

The master valve, which is the switching valve 13, is set to open after a predetermined period of time has elapsed since the air on-off valve 8 was opened.

This time is set to about 3 to 4 seconds, for example.
This coincides with the time required for the refueling on/off valve IO to open from closed.

Furthermore, as a time control method, an air timer 7 is used in the illustrated example. That is, this air timer 7 starts with an air signal indicating that the air on-off valve 8 is open, and after a predetermined period of time has elapsed, switches the switching valve 13 from closed to open (and sends out an air signal. It is also possible to use a throttle valve in place of the air timer 7, and in that case, the air pipe 6 that goes directly from the air source 5 to the throttle valve in place of the air timer 7, as shown, becomes unnecessary.Various other known time control systems are also available. It is possible to consider adopting

The switching valve 13 and the like are configured as described above.

Next, the cylinder with positioner 9 will be described.

The cylinder 9 with a positioner is configured such that its piston rod 91 can be moved forward or backward with a free stroke in response to air pressure from the pressure regulating valve 11.

That is, the positioner-equipped cylinder 9 is directly connected to the air source 5 by an air pipe 6 on the one hand, and is constantly supplied with air pressure. In order to adjust the main air pressure, air pressure is introduced into the positioner-equipped cylinder 9 from the other side, that is, from the pressure regulating valve 11 side, through an air pipe 6. The main air pressure is allowed to be slightly released to the atmosphere, and then guided to the front and rear sides of the cylinder chamber 9□.

Therefore, in response to the air pressure from the pressure regulating valve 11, control is performed so that the amount of the main air pressure released to the atmosphere is inversely proportional to the front and back of the cylinder chamber 9□, so that the piston rod 91 can freely advance and retreat with the corresponding stroke. It is designed to be moved.

The cylinder with positioner 9 has this structure.

Next, the engine 1, the pump 15, and the oil supply on/off valve 10 will be described.

The engine l is a normal vehicle-mounted engine, and its operating lever 2 is connected to the piston rod 9° of the cylinder 9 with a positioner, and its rotation is controlled by operating the lever by moving the piston rod 9 forward and backward. .

The pump 15 is driven by the engine 1 and is provided in a fuel supply pipe C from the tank T.

The refueling on/off valve 10 is provided downstream of the pump 15 in the refueling piping C from the tank T, and uses the air pressure from the air piping 6', which is further branched between the aforementioned air on/off valve 8 and the pressure regulating valve 11, as an air signal. It is opened and closed.

In addition, A in FIG. 3 is an aircraft and L beam is a lid.

The engine 1, pump 15, and oil supply on/off valve IO are configured as shown above.

The refueling vehicle according to the present invention is as described above.

Next, its operation etc. will be explained.

When refueling aircraft A, etc. from tank T of a refueling vehicle,
First, the air on/off valve 8 is switched from closed to open.

Then, the oil supply on/off valve 10 is also switched from closed to open, and air pressure also reaches the pressure regulating valve 11 side.

Then, the air pressure regulated by the pressure regulating valve 11 gradually reaches the throttle valve 14 for an initial period of, for example, 3 to 4 seconds, and then directly reaches the positioner-equipped cylinder 9 through the switching valve 13, which is opened after a predetermined period of time has elapsed. .

Then, in the cylinder 9 with a positioner, the piston rod 9
1 is moved forward and backward, and the operating lever 2 is operated.

For example, when the air pressure is adjusted to a high level by the pressure regulating valve 11, the piston rod 9I of the cylinder 9 with a positioner moves forward,
By tilting the operating lever 2 to the right side in the drawing, the rotational speed of the engine 1 increases, and the flow rate by the pump 15 also increases.

In this way, the rotational speed of the engine 1 is controlled to the optimum value for the oil supply, and the pump 15 exclusively supplies oil at an appropriate flow rate.

The invention of each claim is as follows.

First, the invention of claim 1 is as follows.

That is, as described above, air operation is performed instead of mechanical operation, and a large number of pressure regulating valves 11 can be freely provided at various locations on the vehicle. Therefore, it becomes possible to appropriately control the rotation of the engine 1 at various locations on the vehicle.

For example, on an on-board tank T or on a lifter L,
Furthermore, the rotation of the engine 1 can be controlled at any convenient location during refueling, such as at the rear or side of the vehicle. Therefore, by adjusting the pressure regulating valve 11 at the location where you want to control the rotation of the engine l to a predetermined pressure in advance and adjusting the pressure regulating valve 11 provided at other locations to the closed state, the engine can be controlled at the desired location. 1 rotation control is possible.

Secondly, the invention of claim 1 is further provided as follows.

That is, when refueling work or the like is temporarily interrupted and then restarted later, it is not necessary to operate the pressure regulating valve 11. The air pressure is automatically returned to the previously operated and regulated air pressure, and there is no need to perform rotation control using the pressure regulating valve 11 from the beginning again.

For example, if one of the fuel tanks of aircraft A to be refueled becomes full, - after refueling is interrupted, refueling is resumed in another empty fuel tank, or, for example, when a predetermined refueling amount is reached. Therefore, if there is a request for additional refueling after refueling has been completed, the following will occur.

In other words, by opening the air on-off valve 8 that was once closed while the pressure regulating valve 11 is still set, the air pressure will be restored to the level previously regulated by the pressure regulating valve 11, so that the rotational speed of the engine 1 will decrease. will automatically return to its optimum value.

Thirdly, in the invention of claim 2, it is as follows.

That is, the refueling on/off valve 15 of the refueling pipe C is linked to the air on/off valve 8 of the air piping 6 through the air piping 6'.

Therefore, when starting, interrupting, and ending refueling, it is only necessary to operate the air on-off valve 8 without requiring separate operations.

For example, at the end of refueling, simply by closing the air on-off valve 8, the refueling on-off valve 10 is also closed, and the engine automatically enters the idling state.

Fourthly, the invention according to claim 3 is as follows.

That is, when the air on-off valve 8 of the air piping 6 is opened, the air pressure from the pressure regulating valve 11 is initially changed to the switching valve 13.
is closed, the flow gradually reaches the positioner-equipped cylinder 9 via the throttle valve 14.

Then, when a predetermined period of time has passed since the air on-off valve 8 was opened,
The air pressure from the pressure regulating valve 11 passes through the switching valve 13 opened by the air timer 7, and directly reaches the positioner-equipped cylinder 9 as it is.

In this way, it becomes possible to appropriately set the start-up time of the rotation of the engine 1, and the engine 1 starts to start gradually and smoothly and increases its rotation.

Therefore, the refueling on/off valve 10 is actually switched from closed to open 3 to 4 seconds after the opening operation command is given by the air pipe 6' in conjunction with the opening of the air on/off valve 8, but due to the above-mentioned, the start-up time of the rotation of the engine 1 is It is also possible to make appropriate settings accordingly.

Therefore, the pump 15 is driven too early and the oil supply pipe C
This will definitely prevent the occurrence of a situation where a large load is placed on the system.

The setting of the start-up time of engine 1 is as follows:
Of course, this is performed not only at the start of refueling but also at the time of resumption after the above-mentioned interruption.

The above is the explanation of the operation, etc.

"Effects of the Invention" Since the refueling vehicle according to the present invention is configured as described above, it has the following effects.

In the invention of claim 1, by controlling the rotation of the engine during refueling using an air operation method, it is possible to appropriately control from various locations on the vehicle using a large number of pressure regulating valves, and the work efficiency is significantly improved. When work is temporarily interrupted and restarted later, it is not necessary to perform rotation control again, and work efficiency is improved from this aspect as well.

Furthermore, in the invention of claim 2, since the air on-off valve of the air pipe is linked with the oil supply on-off valve of the oil supply pipe, the operation is simplified and the work efficiency is excellent.

Furthermore, in the invention of claim 3, by providing a predetermined switching valve, throttle valve, etc. in such air piping,
It is easy to set the engine start-up time, the generation of load on the oil supply piping is prevented, the engine, pump, etc. are protected, and accidents that damage them are eliminated. in this way,
The effects of the refueling vehicle according to the present invention are remarkable and significant, such as eliminating the problems that existed in conventional examples of this type.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of conduits, etc., showing an embodiment of a refueling vehicle according to the present invention. FIG. 2 is an explanatory diagram of a conventional engine rotation control mechanism. FIG. 3 is a schematic explanatory diagram of a refueling vehicle, etc. 1... Engine 2... Control lever 5... Air source 6... Air piping 6゛... Air piping 8... Air on/off valve 9... Cylinder with positioner 10... Lubrication opening/closing Valve 11... Pressure regulating valve 13... Switching valve 14... Throttle valve 15... Pump C... Oil supply piping T... Tank Fig. 1

Claims (3)

[Claims] (1) Air piping branched midway from the air source and both leading to a cylinder with a positioner, a pressure regulating valve installed on one of the branched air pipings, and a piston rod that responds to the air pressure from the pressure regulating valve. The above-mentioned cylinder with a positioner that moves forward and backward; an in-vehicle engine that has an operating lever connected to the piston rod and whose rotation is controlled by lever operation by the forward and backward movement of the piston rod; A fuel refueling vehicle, comprising: a pump installed in a refueling pipe of the vehicle. (2) An air on-off valve provided in the air pipe upstream of the pressure regulating valve, and a refueling on-off valve opened and closed by an air pipe further branched between the air on-off valve and the pressure regulating valve. The refueling vehicle according to claim 1, wherein the refueling on/off valve is provided downstream of the pump in the refueling piping from the tank. (3) an air on-off valve provided in the air piping upstream of the pressure regulating valve; and an air piping between the pressure regulating valve and the cylinder with a positioner;
2. The air conditioner according to claim 1, further comprising a switching valve and a throttle valve provided in parallel, the switching valve being set to open after a predetermined time has elapsed from the opening of the air opening/closing valve. refueling vehicle.