JPH09255100A - Oil liquid delivery vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] In an oil-liquid delivery vehicle in which oil is supplied by a pump that uses an engine as a drive source, it is possible to prevent discharge of uncounted oil liquid from an oil supply nozzle. In an oil-liquid delivery vehicle that refuels with a pump 4 using an engine 3 as a drive source, a refueling stop means 14 via a refueling pipeline 5 is always closed during a refueling standby state, and after a refueling end means 28 is operated. While the pressure detecting means 15 via the oil supply line 5 detects a predetermined pressure or higher, the oil supply stopping means 1
An oil-liquid delivery vehicle provided with a control means 20 for temporarily opening 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil liquid delivery vehicle for delivering and refilling an oil liquid mounted in an on-vehicle tank by a pump whose drive source is an engine of the vehicle.

[0002]

2. Description of the Related Art Conventionally, fuel oil such as kerosene in a vehicle for delivering oil to a home tank or a plastic tank provided in each home is small in size by mounting a small tank of 2 kiloliters or less in consideration of road conditions. It was common to use a delivery vehicle.

However, in cold regions, the consumption of kerosene is large, and a small delivery vehicle of 2 kiloliters or less sometimes travels back and forth between the gas station and the delivery destination several times, which requires man-hours and time. Mainstream are medium-sized delivery vehicles equipped with medium-sized tanks of about 1 liter.

[0004]

By the way, since a medium-sized delivery vehicle may not come close to a refueling place along a narrow road due to its size, the length of the refueling hose should be about 40 meters. The pump is also a vane pump that uses an engine with high discharge and high pressure as a drive source.

For this reason, the hand valve of the refueling nozzle is operated while the pump is operating but not refueling, that is, when the refueling amount displayed on the display is fixed for confirming the refueling amount. When the oil liquid is discharged from the nozzle, etc., the amount cannot be counted, and the actual amount of lubrication does not match the amount of lubrication accumulated by the device. Occasionally there was a problem with the customer.

An object of the present invention is to provide an oil liquid delivery vehicle which can solve the above problems.

[0007]

In order to achieve the above object, the present invention provides a tank for storing an oil liquid, an oil supply line having one end connected to the tank, and an oil supply line provided in the middle of the oil supply line. A pump having an engine of the vehicle as a drive source, an oil supply amount detection means, an oil supply hose connected to the other end of the oil supply line, an oil supply nozzle connected to the tip of the oil supply hose, and the oil supply amount detection An indicator for displaying the amount of refueling based on a signal from the means, and an oil liquid delivery vehicle for metering and replenishing the oil liquid by the pump, and a refueling stop means for interrupting the flow of the oil liquid in the refueling pipeline , Pressure detection means for detecting the pressure in the refueling line, refueling start means for outputting a signal for cumulatively displaying the current refueling amount on the display, and a signal for permanently displaying the refueling amount this time on the display Refueling end means and power on The oil supply stopping means is closed until the signal is input from the oil supply starting means and the power is turned off after the signal is input from the oil supply ending means, and the oil supply is completed. Oil liquid delivery provided with a control means for opening the refueling stopping means while the pressure detecting means detects a predetermined pressure or more between the input of a signal from the means and the turning off of the power supply. The idea is to provide a car.

[0008]

According to the present invention, in a medium-sized delivery vehicle that employs a pump whose drive source is an engine, even if the pump is driven, the amount of refueling is not cumulatively displayed on the display unit. Since the stopping means is always closed, it is possible to completely prevent the discharge of the oil liquid from the fueling nozzle which is not counted by the display during the fueling standby.

Further, when the refueling hose is wound and stored on the hose reel during standby, it is detected that the inside of the refueling pipeline has reached a predetermined pressure or more, and the closed refueling stopping means is temporarily opened. Therefore, the refueling hose can be smoothly wound around the hose reel.

[0010]

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

FIG. 1 is an explanatory view showing the overall construction of an oil liquid delivery vehicle which is an embodiment of the present invention. 1 is a tank for storing the oil liquid, and 2 is a PTO (power take-out device). At the time of refueling, the output of the engine 3 of the vehicle is transmitted to the pump 4, and a high-pressure large-volume oil liquid can be refueled from the refueling nozzle 7 with the hand valve via the refueling pipeline 5 and the refueling hose 6.

The refueling hose 6 is usually wound around a hose reel 8, and this hose reel 8 is a PTO.
It is linked with 2. That is, positive displacement circulation pumps 9 and 10 are provided on the output shaft of the PTO 2 and the rotary shaft of the hose reel 8, and the pumps are connected to each other by a hydraulic line 11 so that oil circulates. . In addition, a manual ball valve 12 is provided in the middle of the hydraulic pipe 11, so that the amount of circulating oil can be adjusted.

With the above construction, when the PTO 2 is connected, the circulation pump 9 rotates and oil is sent to the circulation pump 10 on the hose reel 8 side. Then, the circulation pump 10 rotates, and at the same time, the hose reel 8 also rotates. At this time, the rotation speed of the hose reel 8 can be changed by adjusting the opening / closing of the ball valve 12.

A flow meter 13 for converting a flow rate into a pulse and outputting a pulse signal is provided in the refueling pipe line 5, and a solenoid valve (normally open) as a refueling stopping means for stopping refueling when a preset refueling amount is reached during preset refueling. ) 14 and pressure detecting means 15 for converting a pressure change in the oil supply line into an electric change.

By the way, since the pump 4 is a vane pump having a high liquid-tightness, the refueling nozzle 7 is normally used during refueling.
In order to prevent the refueling pipe line 5 and the refueling hose 6 from being subjected to a predetermined pressure or more when the refueling is interrupted by the hand valve or when the solenoid valve 14 is closed at the end of the preset refueling, A return line 17 via the relief valve 16 is provided.

Reference numeral 18 is an ignition switch of the vehicle.
It is composed of an OFF position where the power is turned off by the key, an ACC position where the power is turned on only for the vehicle accessories, an ON position where all the power supplies of the vehicle are turned on, and a START position where the starter motor is started.

The operation of the ignition switch 18 is an operation which is always performed before the engine is driven from the stopped state. By utilizing this operation, the ignition switch 18 is turned on, that is, the keys are ACC, ON and STA.
It is detected that one of RT is present, and the on-vehicle battery 19 is used to measure the flow rate meter 13, the solenoid valve 14, the pressure detecting means 15,
A relay 22 is provided which is wired so that power is supplied to a power-supplied portion 21 including a control unit 20 and the like.

Reference numeral 23 denotes an operation unit, which is an indicator 24 for displaying a refueling amount, a preset switch 25 and a ten-key pad 26 as preset means for presetting the refueling amount at the time of preset refueling, and a refueling start means for outputting a refueling start signal. It comprises a start switch 27, a stop switch 28 which is a refueling end means for outputting a refueling end signal, and the like.

Reference numeral 20 is a control means comprising a conventionally well-known microcomputer or the like, which includes a flow meter 13, a pressure detecting means 15,
Also, various kinds of data are displayed on the display 24 and the solenoid valve 14 is controlled based on the signals from the respective switches.

A battery 29 connected to the control means 20 is a backup power source for the control means 20.

Next, the usage and operation of the present invention will be described with reference to FIG.

When the engine of the vehicle is started because the worker is heading to the refueling place, the ignition switch 1
The relay 22 of this device wired to 8 is energized from the battery 19 to be in the ON state (step 1), power is supplied to the control means 20, and the control means 20 immediately outputs a signal for closing the solenoid valve 14, At the same time as closing the solenoid valve 14 (step 2), the flow meter 13 makes initial settings and enters a refueling standby state.

When the vehicle arrives at the refueling place, the engine 3 is set in the idling state, the PTO 2 is connected, and the pump 4 is driven.

When refueling is performed from this state, if the start switch 27 is turned on (step 3), the signal enters the control means 20, and the control means 20 causes the solenoid valve 14 to operate.
Is output to open the solenoid valve 14, and at the same time, the indicator 24 indicates that the current refueling is normal refueling and that it is 0 liter (step 4).

The operator confirms this display and confirms that the fuel hose 6
Is pulled out from the hose reel 8, the refueling nozzle 7 is brought to the destination, the hand valve of the refueling nozzle 7 is opened, and refueling is performed, and a pulse pulse is output from the pulse transmitter of the flow meter 13 to the control means 20. Since the control means 20 outputs the signal to the display device 24 as a flow rate signal, the refueling amount is sequentially displayed on the display device 24 (step 4). At this point, the operator operates the start switch 27. Even if the hand valve of the refueling nozzle 7 is opened without turning on, the pump 4 is still operating, but the solenoid valve 14 is closed.
No oil liquid is discharged from the oil supply nozzle 7 (the oil supply nozzle 7 is provided with an anti-drip valve which closes when the oil liquid pressure falls below a predetermined level even if the hand valve is opened, and the oil supply hose 6 Although the oil liquid at the end of the last refueling remains inside, the solenoid valve 14 is closed.
Because it is not enough to open the anti-drip valve).

By the way, after the start of refueling, if the amount of refueling is considerable, it takes a long time to open the hand valve of the refueling nozzle 7, so that the operator may have to change the hand valve of the refueling nozzle 7 to something. May be fixed using.

In this case, the operator looks at the amount of oil supply on the display 24 which is returned to the operation unit 23 and is cumulatively displayed, confirms that the desired amount of oil supply has been reached, and turns on the stop switch 28 ( Step 5) Refueling may be ended.

However, even in this case, the control means 20 receiving the refueling end signal from the stop switch 28 outputs a signal for fixing the refueling amount displayed on the display 24 and a signal for closing the solenoid valve 14. Output, solenoid valve 1
Since 4 is closed (step 6), the pump 4 continues to be driven to discharge the oil liquid, but the oil supply nozzle 7 does not discharge the oil liquid, and the fuel supply can be normally completed.

Normally, after the standby state, the operator winds the refueling hose 6 around the hose reel 8. Therefore, when the ball valve 12 is opened, the hydraulic pressure is supplied from the circulation pump 9 which is still connected to the PTO 2. The oil in the pipeline 11 is sent to the circulation pump 10, and the hose reel 8 starts rotating in the direction of winding the refueling hose 6.

Then, the pressure of the oil liquid trapped in the oil supply hose 6 starts to gradually increase. During this time, the pressure detection means 15 continues to detect the pressure and send it to the control means 20, and when the measured pressure P eventually becomes equal to or higher than the predetermined pressure P1 (step 7), the control means 20 causes the solenoid valve 1 to operate.
A signal for opening 4 is output, and the solenoid valve 14 is opened (step 8).

As a result, the oil liquid in the fuel supply hose 6 flows back to the pump 4 side, opens the relief valve 16 and returns from the return pipe 17 to the tank 1 side, so that the pressure in the fuel supply hose 6 decreases. Then, after a while, the pressure becomes less than the predetermined pressure P1 (step 9), and the solenoid valve 14 is closed again (step 10).

Since this control is repeated until the winding of the fuel supply hose 6 is completed, the hose reel 8 can be driven smoothly.

When the refueling hose 6 is completely wound up, the pressure P is always less than P1, so the solenoid valve 14 is closed (step 10), and even if the hand valve of the refueling nozzle 7 is opened, the count is continued. Oil liquid that is not discharged is not discharged.

To start refueling by moving the vehicle to the next refueling place in this standby state, the start switch may be turned on (step 11). When returning and turning off the ignition switch 18, the relay 22 is also turned off (step 1
2) The power of the control means 20 is turned off, and the solenoid valve 14 is opened so that an unnecessary pressure is not applied to the fuel supply hose (step 13).

[0035]

Since the present invention is configured as described above, the refueling stop means is always closed during the refueling standby time in which the refueling amount is not displayed on the display even when the pump is driven. Therefore, it is possible to completely prevent the discharge of oil liquid from the undetected refueling nozzle during refueling standby, and the actual refueling amount and the refueling amount accumulated by the device do not match, and the refueling person and the operator of the refueling station It becomes possible to prevent trouble with the customer.

Further, when the refueling hose is wound up on the hose reel and accommodated during standby, it is detected that the pressure in the refueling pipeline has exceeded a predetermined pressure, and the refueling stopping means which is closed is temporarily opened. Since the refueling hose can be smoothly wound around the hose reel and an unnecessary load is not applied to the drive part of the hose reel or the refueling piping part, the durability of each part can be improved accordingly. .

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an oil liquid delivery vehicle that is an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the apparatus.

[Explanation of symbols]

 1 Tank 2 PTO 3 Engine 4 Pump 5 Refueling Pipeline 6 Refueling Hose 7 Refueling Nozzle 9 Solenoid Valve 13 Flowmeter 14 Solenoid Valve 15 Pressure Detection Means 20 Control Means 24 Indicator 27 Start Switch 28 Stop Switch

Claims (2)

[Claims] 1. A tank for storing an oil liquid, an oil supply pipe whose one end is connected to the tank, a pump which is installed in the middle of the oil supply pipe and uses an engine of a vehicle as a drive source, and an amount of oil supply detection. Means, an oil supply hose connected to the other end of the oil supply line, and an oil supply nozzle connected to the tip of the oil supply hose,
In an oil liquid delivery vehicle configured to display an oil supply amount based on a signal from the oil supply amount detection means, and to meter and supply the oil liquid by the pump, the flow of the oil liquid in the oil supply pipeline is shut off. Refueling stop means, pressure detection means for detecting the pressure in the refueling pipeline, refueling start means for outputting a signal for cumulatively displaying the current refueling amount on the display, and fixedly displaying the refueling amount this time on the display. Refueling end means for outputting a signal, and from the time the power is turned on until the signal from the refueling start means is input, and the time from the signal from the refueling end means is input to the power is turned off. Closes the refueling stopping means, and the refueling stopping means is maintained while the pressure detecting means detects a predetermined pressure or more between the time when the signal from the refueling ending means is input and the time when the power is turned off. Open Hydraulic fluid delivery van, characterized in that a control means for. 2. The oil-liquid delivery vehicle according to claim 1, further comprising a hose reel for winding and storing the refueling hose.