JPS6028756B2 - Refueling device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a refueling device.

A guide rail extending horizontally is laid in the space above the refueling place, and a refueling source suitable for an underground oil storage tank is led out and suspended along the guide rail via a displaceable carrier, and the lower end of this hanging hose is A device is known in which oil is supplied using a nozzle.

This refueling device is convenient because by displacing the carrier in the horizontal direction, the position of the hanging hose can be changed and the range of refueling possible can be expanded. However, if the carrier is accidentally displaced and driven during refueling, This is extremely dangerous as the nozzle will be pulled out of the oil inlet and oil will spray out.

In view of this point, the present invention makes it impossible to displace the carrier during refueling, so the present invention includes a guide means extending horizontally in the space above the refueling place, and a carrier displaceable along the guide means. The hose has one side passed through the oil storage tank, the other side is led out through the carrier, and a refueling nozzle is connected to the lower end of the hose, which can be raised and lowered, and the nozzle generates a number of pulse signals according to the amount of refueling. and means for independently controlling the displacement of the carrier along the guide means and the elevation and descent of the hose, wherein the pulse signal from the pulse signal generating means is applied to the refueling hose for a predetermined period of time. The present invention is characterized in that it is configured to be applied to the control circuit as a lock signal that prevents the displacement of the carrier and the lifting and lowering of the hose.

The illustrated embodiment will be described in detail. In the figure, 1 is a horizontal roof supported by a wall W in the space above the ground G of the gas station, 2 is a guide rail extending horizontally under the roof 1, and 3 is this guide rail. 2 is a horizontally displaceable carrier.

The housing 4 of the carrier 3 can be displaced in the horizontal direction by rolling rollers 7, 8 supported by brackets 5, 6 fixed to the upper surface of the housing into contact with the guide rail 2. M3 is a reversible motor built into the housing 4, and 10 is a reducer connected to the output shaft 11 of the motor M3. It is transmitted to the moving roller 7 via a transmission mechanism 12, and to the lifting roller 15 of the hose 14 via a chain sprocket wheel transmission mechanism 13 including a sprocket wheel W2 with an electromagnetic clutch. 16 is a loop around which the hose 14 is wound;
M2 is a reversible motor for rotating the reel 16, 17 is a chain sprocket wheel transmission mechanism, and 181 is a hose 1.
The starting ends of 4 are oil pipes connected via a rotary seal joint 19, the two rivers are a flow meter inserted into the oil pipe 19, 21 is a flow rate pulse transmitter, 22 is a pump, and MI is a pump motor.

The oil pipe 18 is suitable for an underground oil storage tank (not shown). 25 is a support plate fixed to the upper part of the housing 4 of the carrier 3; 26 is a gadroller attached to the support plate 25; the hose 14 led out from the reel 16 passes through the guide roller 26' and is bent by the guide loaf 26; and is suspended through a closure 27 in the lower surface of the housing 4.

A nozzle 28 is connected to the lower end of the hose 14. Reference numeral 29 denotes a driven roller that holds the hose 14 between it and the hose elevating roller 15 within the housing 4, and is connected to a nozzle height detector 31 via a chain sprocket wheel transmission mechanism 30.

That is, when the hose 14 is moved up and down, the roller 2
9 rotates, and this rotation is transmitted to the detector 31 to detect the height of the nozzle from the ground surface G. SI is an operating switch for raising and lowering the nozzle (hose), and 32 and 33 are rollers that detect horizontal displacement of the hanging portion of the hose 14, which actuate detection switches S2 and S3, respectively. That is, the first
In the figure, when the hose 14 is moved to the right while holding the nozzle 28, the roller 33 is pushed against the spring 33', the switch S3 is closed, the carrier is moved to the right, and conversely the hose 14 is moved to the left. When moved to , roller 32 is pushed against spring 32', switch S2 is closed, and the carrier is moved to the left. As the carrier moves, the hose 14 is unwound from the reel 16 or wound onto the reel. Details regarding these points will be described later. S6 is a hose slack detection switch attached to the bracket 5.

S4 and S5 are provided at both ends of the seal 2 or are mitt switches, and are activated when the carrier 3 moves to both end positions to stop the carrier 3. As shown in FIG. 4, the hole 14 (therefore the nozzle 28) is at (A)
It is forced to rise to the upper limit position of (B), and at the start of business, it is forced to the middle or standby position of (B).

Then, when refueling, it is further lowered to the lower limit or refueling position (C). S7 is a switch that lowers the hose 14 from the upper limit position (A) to the intermediate position (B) and raises the hose from the lower limit position (C) or intermediate position to the upper limit position. Control of lifting and lowering between C) is performed by switch SI.

Reference numeral 34 denotes a control box housing a control circuit for controlling the displacement of the carrier 3, lifting and lowering of the hose, and control of the pump motor.

35 is a display for refueling information such as the amount of refueling and the price, and 36 is an oil type display and a lamp for downward illumination.

FIG. 5 is a block diagram showing an example of a control circuit, and FIG.
The same reference numerals in FIG. 3 indicate corresponding elements. A counting circuit 37 counts the pulses from the flow rate pulse generator 21 and provides a signal corresponding to the counted value to the display drive circuit 38.

The flow pulse from transmitter 21 is also applied to control circuit 39, which generates a lock signal to prevent energization of motors M2 and M3, as described below. Assume now that the hose 14 and therefore the nozzle 28 are at the upper limit position (A) in FIG.

When the down switch S7-D of the switch S7 is pressed at the start of business hours, the motors M2 and M3 are urged to rotate forward, and the clutch C2 of the clutch-equipped wheel W2 is connected. Therefore, the hose reel 16 and the hose drive roller 15 rotate clockwise in FIG. 1, lowering the hose 14 and therefore the /zurl 28. In this case, when the hose 14 becomes slack, the switch S6 is closed and the motor M2 is deenergized, and only M3 continues to be energized. When the hose 14 is lowered and the slack in the hose disappears and the switch S6 is opened, the motor M2 is deenergized. is energized to rotate normally again, and the hose is discharged from the reel 16. The descent of the hose is detected by the detector 31 via the roller 29 and the chain/sprocket wheel transmission mechanism 30, and the nozzle 28
When the motor M3 reaches the intermediate (standby) position (B), the motor M3 is deenergized by the output from the detector 31, and the clutch C2 of the clutch-equipped wheel W2 is disconnected.

Therefore, the nozzle 28 is stopped and held at the intermediate position (B).
When refueling, press the switch SI near the nozzle 28.
When the down switch SI-D is pressed, the down switch S7 mentioned above is pressed.
-Hose 14 (nozzle 28) in the same way as when pressing ○
) moves down to the lower limit (lubrication) position (C) and stops.

Incidentally, when the switch SI-○ is pressed, the display 35 is returned to zero according to the counting circuit 37 by the return-to-zero signal, and the pump motor MI is energized.

When the lower limit position (C) of the hose 14 (nozzle 28) is far from the target to be refueled, when the hose 14 is pulled, for example, to the left in FIG. 1, the roller 32 is pushed to the left against the spring 32', and the switch is S2 is closed, the motor M3 is reversely energized, and the clutch C of the clutch equipped wheel WI is activated.
I connect. Therefore, since roller 7 rotates counterclockwise in FIG. 1 and moves carrier 3 to the left, roller 1
5 (does not rotate at this time) and the hose 14 slackens between the handles 16, and the slack detection switch S6 is closed.

In this case, the motor M2 is reversely energized by closing the switch S6, and the slack of the hose 14 is wound onto the reel 16. On the other hand, since the roller 15 does not rotate, the length of the hose hanging from the carrier is not affected by the displacement of the carrier. When the hose 14 is pulled leftward and returns to its original vertical state due to leftward displacement of the carrier 3, the detection roller 32 is returned by the spring 32', the switch S2 is opened, and the motor M3 is turned on. The power is deenergized and the clutch CI is disconnected. At this time, if the hose 14 is still slack,
Since the switch S6 is closed, the motor M2 continues to be energized in the reverse direction and takes up the slack of the hose 14 onto the reel 16. When there is no slack in the hose 14, the switch S6 is opened and the motor M2 is deenergized. When the hose 14 is pulled to the right, the roller 33 is pushed to the right against the spring 33', the switch S3 is closed, the motors M2 and M3 are energized for forward rotation, and the clutch CI is connected. Therefore, the hose is moved from the reel 16. It is rolled out and the carrier is moved to the right.

In this case, the forward rotation of the motor M2 is performed only when there is no slack in the hose 14 and the switch S6 is opened. When the hanging portion of the hose 14 returns to the vertical position, switch S3 is activated.
is restored, opening motor M3 is deenergized, and clutch CI is disconnected.

When the hose is slack and switch S6 is closed, motor M2 is deenergized. When the carrier 3 reaches the limit of left or right movement and operates the limit switch S4 or S5, the motor M3 is deenergized and the clutch CI is disconnected.

When the tip of the nozzle 28 is inserted into, for example, a car's oil filler port for refueling and the valve is opened by operating the nozzle lever, the transmitter 2
A flow rate pulse is transmitted from 1, and a counting circuit 37 counts this pulse. The flow rate pulse is also given to the control circuit 39,
This generates a lock signal that prevents energization of motors M2 and M3.

Therefore, as long as the flow rate pulse is occurring, that is, as long as oil is being supplied, the displacement of the carrier 3 and the displacement of the hose 1
4 cannot be raised or lowered. After a flow rate pulse is output, the next flow pulse is not generated even after a certain period of time, for example several seconds, has elapsed.

The lock signal disappears and motors M2 and M3 can be energized.
When the rising switch SI-U of the switch SI is pressed after refueling is completed, the motor M3 is reversely energized and the clutch C2 is engaged.

Therefore, when the hose 14 is raised and slack occurs in the hose, the detection switch S6 is closed, the motor M2 is reversely energized, and the slack in the hose is taken up on the reel 16.
When there is no slack in the hose, switch S6 is opened and motor M2 is deenergized. Note that the pump motor MI is deenergized by pressing the switch SI-U. hose 14
The rise of the nozzle 28 is detected by the detector 31 through the rotation of the roller 29, and when the intermediate (standby) position is reached, the motor M3 is deenergized and the nozzle 28 is stopped and held at that position. When the raise switch S7-U of the switch S7 is pressed at the end of business hours, the hose is raised in the same way as when the raise switch SI-U is pressed, and the nozzle 28 is lowered to the upper limit position (A) and is stopped and held there. .

Note that when the nozzle is at the lower limit (lubrication) position, It is also possible to raise the nozzle to the upper limit position by pressing switch S7-U.

In this case, when the switch S7-U is pressed, the pump motor MI is deenergized. In the above embodiment, hose 1
If the hose 4 is unwound from the reel 16, the speed at which the hose 14 is wound onto the reel 16 is set to be higher than the speed at which the hose 14 is lowered or pulled up by the roller 15, or the horizontal movement speed of the carrier 3. desirable to prevent too much tension or sagging.

In the above embodiment, the lock signal for preventing the motors M2 and M3 from being energized was configured to be obtained from the flow rate pulse, but the lever was operated to open the valve by detecting the displacement of the valve operating lever of the nozzle 38. Sometimes a lock signal may be generated, or a detector may be attached to the tip of the nozzle to detect that the nozzle is inserted into the oil filler port, and the lock signal may be generated based on the detection output. good.

In the illustrated embodiment, the motor M2 is used both for displacing the carrier and for lifting and lowering the hose, but separate motors may be used. In addition, the hose reel 16 may also be stored in a suitable room without using the hose reel 16, and the hose may be unloaded from there.

As described above, according to the present invention, while maintaining the advantage of this type of device in which the carrier can extend the range of lubrication, the risk of the carrier inadvertently rising or moving during lubrication and spewing out pongee from the nozzle can be completely eliminated. This ensures safe refueling operations.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a plan view taken from the 0-0 line in Fig. 1, Fig. 3 is a sectional view taken along the line m-m in Fig. 1, and Fig. 4. A, B, and C are schematic diagrams showing three different positions of the hose and nozzle, and FIG. 5 is a block diagram of the control circuit. 1... Ceiling, 2... Guide rail, 3... Carrier, 7, 8... Moving roller, 10... Reducer, 1
2, 13, 17, 30... Chain sprocket wheel transmission mechanism, 14... Hose, 15... Lifting roller, 16. ... Hose reel, 18 ... Oil pipe, 20
...Flow meter, 21...Flow rate pulse transmitter, 26, 26'
...Guide roller, 27...Sekiguchi, 28...Nozzle, 29
... Driven roller, 31 ... Nozzle height detector, 34
... Control box, 35... Display, 36... Illumination lamp, 37... Counting circuit, 38... Display drive circuit, M1, M2, M3... Motor, SI to S7... Switch , CI, C2...electromagnetic clutch. Figure 2 Hair Figure 3 Figure Snake Brother 4 Figure Hair S Figure

Claims (1)

[Claims] 1. A guide means extending horizontally in the space above the refueling place, a carrier displaceable along the guide means, one side communicating with the oil storage tank, the other side leading out through the carrier and hanging down, and the lower end thereof. a hose that can be raised and lowered to which a refueling nozzle is connected; a means for generating a number of pulse signals corresponding to the amount of refueling by the nozzle; and a means for independently controlling the displacement of the carrier along the guide means and the raising and lowering of the hose. A refueling device comprising a control means, wherein the pulse signal from the pulse signal generating means is applied to the control circuit as a lock signal for preventing displacement of the carrier and raising and lowering of the hose for a predetermined period of time. A refueling device characterized by: