JPH0524040B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuel supply device mounted on the loading platform of a truck for metering and selling liquid heating materials such as kerosene.

[Prior art and its problems]

The refueling device mounted on the loading platform of such a truck includes an oil storage tank, a pump and a flow meter attached to a pipe that communicates with the oil storage tank, and a refueling hose having a refueling nozzle at the tip connected to the pipe. Fuel is pumped from the oil storage tank and discharged from the nozzle via the fuel hose.
At that time, the amount of refueling measured by the flowmeter is displayed on the refueling amount display meter attached to the case, and sales are made by weight.

By the way, taking kerosene among fuels as an example, it is ideal for commercial transactions of kerosene to be carried out under conditions of standard temperature (15℃), and conventionally the temperature of kerosene when measured with a flow meter was kept at this standard temperature. It was sold as is, even if the temperature was different.

Therefore, for example, kerosene sold at 1000 c.c. (1) measured with a flow meter at 5°C in winter is 1009 c.c. at standard temperature (15°C) according to the following formula.

1000c.c.0.0009 x (15-5) = 9c.c. 1000c.c. + 9c.c. = 1009c.c. 0.0009 is the volume conversion coefficient of kerosene for a change of 1℃ 0.0009 (15-5) is 5 Temperature correction coefficient at °C The retailer will lose by this 9c.c.

On the other hand, in the summer, the temperature of kerosene is measured with a flow meter and sold at around 30 degrees Celsius.
Customers who buy this will be at a loss.

In particular, kerosene is not only sold on the spot at a gas station, but also loaded into a storage tank attached to the bed of a truck and delivered to long distances, but while the truck is driving, the storage tank is exposed to the outside air and direct sunlight, and the kerosene inside the tank is is low in winter and high in summer. This causes the above-mentioned inconvenience.
Additionally, if the temperature at which the oil storage tank is refilled from the underground tank differs from the temperature at which it is weighed and sold, the amount will increase or decrease depending on the temperature, making it impossible to deliver to all the scheduled customers, or the delivery staff Trouble arises, such as being suspected of misappropriation.

In addition, in such a refueling device mounted on the loading platform of a truck, the control device and the refueling amount indicator, which are comprised of an IC circuit or the like, are subject to impact while the truck is running, and the safety of the device is likely to be compromised.

Furthermore, if refueling hoses are exposed and mounted on the loading platform, they will be exposed to direct sunlight, wind, and rain.
It becomes painful.

[Purpose of the invention]

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
Regardless of the actual temperature of the fuel oil, measurements made with a flowmeter can always be obtained based on a constant temperature state, and as a result, losses and gains due to temperature changes can be eliminated, and equipment such as control equipment and display meters can be In addition to ensuring reliability by preventing shocks while the truck is running, refueling hoses and other equipment are stored in an exterior case covered with a door when not in use, so they are exposed to direct sunlight, wind, and rain. To provide a refueling device mounted on a truck that can improve the weather resistance of a refueling hose, etc., which is often moved outdoors while being mounted on the loading platform of a truck.

[Key points of the invention]

However, according to the present invention, the purpose of the lever is to provide an oil storage tank, a pipe connecting the oil storage tank and a refueling hose having a refueling nozzle at the tip, a refueling pump connected to a motor provided in the middle of this piping, and a flow rate a control device that calculates a temperature-corrected flow rate based on a flow rate signal from the flow meter, a temperature signal from the temperature sensor, and a volume conversion coefficient stored in advance in a storage unit; It has a display meter that displays the temperature-corrected flow rate calculated by the device, and a fuel switch that connects to the control device, and these control devices, display meters, and other electronic precision equipment are housed in flameproof explosion-proof boxes. The hose storage device is installed inside an exterior case containing a vibration isolating member, and the exterior case has a structure in which the rear wall is left behind and the other parts open upward via hinges. This is achieved by installing an opening/closing door at a position opposite to the storage device.

[Embodiments of the invention]

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

FIG. 1 is a perspective view showing an embodiment of the oil supply device of the present invention, FIG. 2 is a side view with the same partially cut away, and FIG. 3 is a front view with the same partially cut away.

That is, in order to be able to deliver kerosene, an oil storage tank 2 made of metal such as aluminum alloy and having a replenishment port 2a and an oil distribution pipe 1 are installed on the loading platform 1a of the truck 1.
From 2 onwards, an oil supply device 3 of the present invention connected to this oil storage tank 2 is arranged.

In the refueling device 3, a hose reel 6 is housed in an exterior case 5 whose rear wall is left open and the rest opens upward via a hinge 4, and the rotation shaft 6a of the hose reel 6 is connected to a forward/reverse motor 7. It is connected by a belt 9 to a drive shaft 8a of a one-way crank 8.

A refueling hose 11 having a refueling nozzle 10 attached to its tip is retractably wound around the hose reel 6, and the base end of the refueling hose 11 is connected to a refueling pipe 12 communicating with the oil storage tank 2. A refueling pump 14 connected to the forward/reverse motor 7 via a one-way crank 13 and a flow meter 15 are disposed in the refueling pipe 12, and a flow rate pulse transmitter 16 is attached to the flow meter 15. Further, a temperature sensor 17 was installed in the middle of the piping near the flow meter 15.

In the figure, 18 is a control device composed of an IC circuit, etc., and 19 and 20 are a counter that shows the total amount and remaining amount, and a refueling amount display meter.These electronic precision devices are each housed in a flameproof explosion-proof box. It is provided on the inner body 28 via a vibration isolating member 29, and is designed to avoid receiving shocks while the truck 1 is running.

FIG. 4 is a block circuit diagram of the control device 18.
are the central processing unit (CPU) 18a and RAM,
It is composed of a ROM storage device 18b, a clock device 18c, etc., and transmits the flow rate signal from the flow rate pulse generator 16 and the temperature signal from the temperature sensor 17 to the control device 18.
Furthermore, the input signals of the input key 21 for inputting the amount of replenishment to the oil storage tank 2, the fuel supply switch 22, and the remaining amount display switch 23 are also introduced to the control device 18, and the output signals of the control device 18 are amount) is introduced into the counter 19 and the refueling amount display meter 20. Note that the storage device 18b of the control device 18
A volume conversion coefficient corresponding to a temperature change of fuel oil, for example kerosene, flowing into the oil storage tank 2 is preset in the ROM.

Further, on the front plate of the exterior case 5, a door 26a that opens and closes with a hinge 24 and is locked with a lock 25 is provided at a position opposite to the hose reel 6 on the counter 1.
9 and a transparent window 27 in front of the refueling amount indicator 20,
Doors 2 are installed on various switch parts such as the fuel switch 22.
6b was installed.

Next, to explain how it is used and how it works, at a gas station, kerosene flows from an underground tank into a fuel storage tank 2 through a replenishment port 2a, and the amount is determined using the input key 2.
1 to store the storage device 18b of the control device 18.
It is stored in the oil amount storage area of RAM.

The truck 1 is started from a refueling station, stops at a customer's place, releases the lock 25 of the door 26a of the case 5, opens it, and pulls out the refueling nozzle 10 and the refueling hose 11. At this time, the hose reel 6 idles. Since the refueling hose 11 and the like have the door 26a behind them, they do not come out of the case 5 when not in use, improving weather resistance.

Next, when the oil supply switch 22 is turned on, the control device 1
8, the previous oil supply amount in the storage device 18b is reset to zero, and the oil supply amount display meter 20 is reset to zero. and,
The motor 7 rotates normally and drives the oil supply pump 14.

Note that at this time, the hose reel 6 does not rotate due to the action of the one-way clutch 8.

When the tip of the fuel nozzle 10 is inserted into a fuel inlet of a plastic tank or the like and the nozzle 10 is opened by operating a lever, kerosene is sucked up from the oil storage tank 2 and discharged from the end of the nozzle 10. At that time, the flow rate is measured by the flow meter 15, and the measured value is measured by the flow rate pulse transmitter 16.
is sent to the control device 18 as a flow rate signal. Further, the temperature of the kerosene flowing through the flowmeter 15 is detected by a temperature detector 17, and the temperature signal is sent to the control device 18.
sent to.

The central processing unit 18a of the control device 18 calculates a coefficient for converting to a standard temperature from the volume conversion coefficient stored in the ROM of the storage device 18b and the actual temperature based on the temperature signal. Then, the actual flow rate value based on the flow rate signal is temperature-corrected using this temperature correction coefficient, the flow rate value at the standard temperature is calculated, and the numerical value is stored in the oil supply amount storage area of the RAM of the storage device 18b, and the total oil supply amount memory is stored in the RAM. The total amount is stored in the area and further displayed on the oil supply amount display meter 20.

Further, the value is subtracted from the value in the oil amount storage area of the RAM of the storage device 18b, which was input when replenishing the oil storage tank 2.

Once the desired amount of oil has been supplied, the refueling switch 22 is turned off to stop the motor 7 and the refueling pump, and the refueling operation is completed. Next, when the hose winding switch is turned on, the motor 7 is reversely rotated, the hose reel 6 is rotated, and the drawn-out refueling hose 11 and refueling nozzle 10 are stored in the winding case 5. Note that at this time, the oil supply pump 14 is not driven by the action of the one-way clutch 13.

When the winding is completed in this manner, the motor 7 is stopped and the rotation of the hose reel 6 is also stopped by turning off the winding switch.

Also, if the remaining amount display switch 23 is pressed when necessary, the remaining amount of kerosene in the oil storage tank 2 stored in the oil amount storage area of the storage device 18b will be displayed on the counter 1.
9 will be displayed.

Furthermore, since the entire case 5 opens upward leaving the rear wall at the hinge 4, maintenance and inspection can be carried out on the case 5.
You can easily open it.

〔Effect of the invention〕

As described above, the refueling device mounted on a truck according to the present invention can always obtain the measured value of the flowmeter based on a constant temperature state regardless of the actual temperature of fuel oil such as kerosene, and as a result, Even if the kerosene becomes hot or cold due to exposure to outside air and direct sunlight while driving, there will be no loss or loss due to the temperature change, and pointless confusion can be prevented. Furthermore, since the flow rate signal from the flow meter is corrected and calculated within the control device, it is more compact and less prone to failure than mechanical devices.

Furthermore, since the control device and fuel supply indicator, which are made up of IC circuits, etc., are installed through vibration-proofing members, they are designed to protect them from shock while the truck is running, ensuring the safety of the equipment. be.

Furthermore, since the refueling hose and the like do not come out of the case when not in use, weather resistance is improved, and maintenance and inspection of the refueling hose and the like can be easily performed because the entire case can be opened upward.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the oil supply device of the present invention, Fig. 2 is a side view of the same with a part cut away, Fig. 3 is a front view of the same with a part cut away, and Fig. 4 is a block circuit diagram of the same. be. 1... Truck, 1a... Loading platform, 2... Oil storage tank, 2a... Filling port, 3... Oil supply device, 4...
Hinge, 5...Exterior case, 6...Hose reel,
7... Forward/reverse motor, 8... One-way clutch,
8a...Drive shaft, 9...Belt, 10...Refueling nozzle, 11...Refueling hose, 12...Piping, 13
... One-way clutch, 14 ... Oil supply pump, 15
...Flow meter, 16...Flow rate pulse transmitter, 17...
...Temperature detector, 18...Control device, 18a...Central processing unit (CPU), 18b...Storage device, 18
c... Clock device, 19... (total, remaining amount) counter, 20... Oil supply amount indicator, 21...
...Input key, 22...Refueling switch, 23...Remaining amount display switch, 24...Hinge, 25...Lock, 26a, 26b...Door, 27...Window, 28...
...Frame body, 29...Vibration isolation member.

Claims (1)

[Claims] 1 An oil storage tank, a pipe connecting the oil storage tank and a refueling hose with a refueling nozzle at the tip, an oil pump connected to a motor, a flow meter, a temperature sensor, and a flow meter installed in the middle of this piping. a control device that calculates a temperature-corrected flow rate based on the flow rate signal from the temperature sensor, the temperature signal from the temperature sensor, and a volume conversion coefficient stored in advance in a storage unit; It has a display meter that displays and a fuel supply switch that connects to the control device.
These electronic precision devices such as control devices and display meters are each housed in a pressure-resistant explosion-proof box and installed via a vibration-proofing member in an exterior case that houses a hose storage device. What is claimed is: 1. A refueling device mounted on a truck loading platform, characterized in that a portion thereof is configured to open upward via a hinge, and an opening/closing door is attached to a front plate of the front plate at a position opposite to a hose storage device.