JPS6024036B2 - Hose lifting control device for refueling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hose elevation control device for use in a refueling system, particularly in a high-place refueling system, in which the ejection and retraction of a refueling hose is controlled by pulse signals.

A high-place refueling system is a refueling system that stores a hose or a hose in a case suspended from the ceiling of a refueling station, for example.
The hose wound on this reel is pulled out from its highest position to the lowest position or refueling position, and refueled with a nozzle at the end of the hose.In the refueling standby position, the hose is wound onto the reel to the intermediate position or standby position, and when the hose is in service. The end armpit is wound up to the highest position.

In order to control the hoisting of the hose (elevating and lowering the hose), it has conventionally been possible to fix multiple cams to the rotating shaft of the reel and control the reel drive motor through the operation of switches by these cams. is being carried out.

By the way, in high-place refueling systems, the distance between the case that houses the hose and the ground surface varies, so multiple cams that define the hose position must be adjusted to suit the installation site of the refueling system. There is.

Furthermore, the switch may be damaged due to long-term use,
Also, if the hose stretches, the cam will need to be readjusted. However, since the cam is very small compared to the distance or length of the hose, adjustment requires skill, and replacing the switch and initial and readjustment of the cam is dangerous because it is done at a high place. This is a difficult task that involves The present invention has been proposed in view of these drawbacks, and includes a refueling device in which a hose with a refueling nozzle connected to the lower end is drawn out from a storage case installed at a high place or is stored in the case. means for generating a number of pulse signals corresponding to the length of the hose up and down by moving the hose up and down means for delivering or storing the hose; and the pulse signal generating means corresponding to the predetermined length of the up and down of the refueling hose. means for storing the number of pulse signals from the pulse signal generating means, the number of pulse signals stored in the storage means, the number of generated pulse signals from the pulse signal generating means, or the number of generated pulse signals stored in the storage means. means for comparing a subtracted value subtracted from the maximum lowering position pulse signal number of the refueling hose and outputting a match signal when the stored pulse signal number matches the generated pulse signal number or the subtracted value; and control means for selectively stopping the refueling hose at a preselected position by controlling the hose elevating means based on the above.

According to the present invention, furthermore, in order to accurately control the elevation of the hose, a means for generating a correction signal is added at the highest position of the hose (refueling nozzle) or at least one intermediate position of the elevation, and When the control means receives the correction signal, the lifting means may be controlled by this correction signal instead of the coincidence signal.

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

In Figure 1, 1 is the gas station building, 2 is the ground of the gas station,
3 is the oil pipe from the underground oil storage tank (not shown) to building 1.
installed in walls and ceilings. 4 is a pump, 5 is a pump motor, 6 is a flow meter, 7 is a flow rate pulse transmitter,
Reference numeral 8 denotes a display indicating the amount of refueling, the amount of refueling, etc., and is installed at a high place on the wall of the building 1.

9 is a storage case or housing fixed to the ceiling of the building 1, 10 is a hose IJ reel housed in the case 9, and 11 is for rotating the hose reel (for lifting and lowering the hose).
A reversible motor, 12 a transmission mechanism for transmitting the rotational output of the motor 11 to a hose reel, and 13 a hose wound around the reel, the base end of which is connected to the tip of the oil pipe 3 via a rotary seal mechanism.

Reference numeral 14 denotes a lubricant/squeeze connected to the hanging end of the hose 13.

The hose 13 is moved to the reel 1 by the forward and reverse rotation of the motor 11.
It is paid out from zero or wound up on a reel. In this type of high-place refueling system, the hose (nozzle) is wound up to the highest position (Fig. 2a) when the service station closes, and the nozzle 14 is raised approximately 1.8 h from the ground surface when the service starts. The hose is let out so that it is lowered to the standby position or intermediate position (Fig. 2 b), and when a refueling customer comes, the hose is let out further to move the nozzle 14 further from the standby position to the refueling position or intermediate lowering position (Fig. 2). After refueling, the hose is lowered to the lowest point (c) for refueling, and when refueling is finished, the hose is rolled up again to the standby position to wait for the next refueling customer, and at the end of business hours, the hose is rolled up to the highest position. As mentioned above, conventionally, the motor 11 for feeding and winding up the hose was controlled by a cam fixed to the rotating shaft 10' of the reel 10 and a switch operated by the cam.
In the present invention, this control is performed using pulses.

The pulses for this control are generated by a pulse generator 15 in the illustrated embodiment.

That is, the pulse transmitter 15 transmits a pulse every time it detects at least one detection target piece, for example, a magnet 18 attached to the periphery of the rotating plate 17 which is interlocked with the rotation of the reel 10 via the transmission mechanism 16. This pulse is sent to the control unit 19, and each switch described below sets the standby position and lowest position of the hose and controls the raising and lowering of the hose based on the operations of S and S5.

Assume that the hose (nozzle) is now at the highest position shown in FIG.

In this state, the detected piece (or switch operating piece) 21 is attached to the hose position corresponding to the detector (or switch). In addition, at the highest position of the hose, the length of the hose 13 hanging down from the case 9 is small, and since it is located at a high place, there is no need to change the hanging length of the hose depending on the individual installation site, and the length of the hose 13 hanging down from the case 9 is small. Even if it expands during use, this can be ignored, so the installation settings of the detection target piece 21 and the detector 20 can be done at the factory assembly stage, and no adjustment is required on site. When the case 9 is installed in a predetermined position at a high place in a gas station and the hose position setting switch SI is switched to the position setting side, the detector 20 detects the detected piece 21 and the output signal generated is a pulse. The counter 22 is reset to zero (see Figure 3). When the "down" switch S5-1 of the hose elevating switch S5 is held down, the motor 11 rotates forward, rotates the reel 10, and lets out the hose 13. When the nozzle 14 at the lower end of the hose descends to about 1.8 m above the ground (standby or intermediate position), the "down" switch is released to stop the rotation of the motor 11. While the hose is lowering
The rotary plate 17 moves and rotates with the reel 10, and the pulse transmitter 1
5 emits a pulse every time the detected piece 18 is detected, and the number of pulses is counted by a counter 22.

After the hose is stopped at the standby position, when the standby position setting switch S2 is pressed, the count value of the counter 22 is stored in the memory circuit 23 as the hose standby position. Next, if the "down" switch S5-1 is held down again, the hose will further descend in the same manner as described above, and when it has descended to the lowest position or the refueling position, the switch S5-- will be released to stop the hose.

During this time, the counter 22 counts the pulses from the standby position to the lowest position in addition to the pulse count up to the standby position. This pulse count value is stored in the memory circuit 2 as the lowest (refueling) position of the hose (nozzle) by pressing the lowest position or refueling position setting switch S3 after the hose has stopped.
3 is stored. Next, when the switch S5 (S5-2) is pressed continuously, the motor 11 is reversed, the hose is wound up on the reel 1, and the detected piece 21 is transferred to the detector 2.
0 is detected and generated, the motor 11 is deenergized and the hose (/zuru) is stopped and held at the highest position. Now that the position setting is complete, switch SI to the normal use side.

In normal use, when the gas station starts operating, if you keep pressing the "down" switch S5-1, the hose lifting motor 1
1 rotates forward and the hose descends, and at the same time, the counter 22 counts the pulses from the transmitter 15 and sends the counted value to the comparator 24.

The comparator 24 is supplied with pulse count values from the memory 23 that represent the hose standby position and lowering position that have been previously set and stored. Therefore, when the pulse count value from the counter 22 matches the hose standby position pulse count value from the memory 23, the comparator 24 generates an output (coincidence signal), and based on this signal, the control circuit 25 generates a signal. The motor 11 is deenergized and the hose is stopped at the standby position. When a customer who wants to refuel comes, the nozzle 14 is placed in the standby position.
Press the operation switch S4 located near the button. As a result, the motor 11 rotates forward and the hose 13 is further fed out, and at the same time, the pulses from the transmitter 15 are counted and added by the counter 22 to the pulse count up to the previous standby position. When this count value matches the hose length lowering position pulse count value from the memory 23, the comparator 24 generates a coincidence signal, and based on this, the motor 11 is deenergized and the hose is stopped at the lowest position. . By turning on the switch S4, simultaneously with the above-described operation of lowering the hose (nozzle) to the long-lowering position, the previous refueling information on the display 8 is returned and the pump motor 5 is energized.

Then, when you operate the nozzle 14 to refuel, the display 8
displays the refueling amount, refueling amount, and other refueling information based on the refueling amount pulse transmitted from the transmitter 7 in accordance with the refueling amount. When refueling is completed, the operation switch S4 is pressed again.

As a result, the control circuit 25 gives a subtraction command signal to the counter 22, and also energizes the motor 11 in the reverse direction. Therefore, the hose is wound up, and the pulse from the transmitter 15 is subtracted from the hose lowest position pulse count in the counter 22. When the subtracted value matches the hose standby position pulse count, the comparator 24 outputs a match signal. ,
The motor 11 is deenergized and the hose (nozzle) is stopped and held in a standby position, waiting for the next visitor. This operation switch S4
Based on the operation, the pump motor 5 is also deenergized.

Repeat the same operation as above for the next visitor.

When the hose is in the standby position, pressing the operation switch S4 once will energize the hose lifting motor 11 for normal rotation, energize the pump motor 5, generate an addition command signal to the counter 22, and return the display to the display 8. When zeroing is performed and the switch S4 is then pressed, the motor 11 is energized in the reverse direction, the pump motor 5 is deenergized, and a subtraction command signal is generated to the counter 22.
This is repeated sequentially.

This repeated operation is possible as long as the hose is at the standby position and the lower limit position, or at an intermediate position between the two. Therefore, for example, when the hose (nozzle) is at the lower limit position and one customer has finished refueling, and the next customer is to be refueled immediately, the operation switch S4 may be pressed twice in succession. When business ends, ``If you keep pressing Shoichi switch S5-2,
The motor 1 is reversely energized to further wind up the hose from the standby position, and at this time the pulse from the transmitter 15 is subtracted by the counter 22 from the standby position pulse count. A subtraction command signal is given to the counter 22 by pressing the ascending J switch S5-2. When the subtraction value becomes zero, the motor 11 is deenergized by the match signal from the comparator 24, and the hose is turned off to the maximum. It is stopped and held at the raised position.When the detected piece 18 is detected by the detector 20 until the subtraction value becomes zero, the motor 1 is stopped based on the detection output (correction signal).
1 is deactivated, and the count value in the counter 22 is reset to zero. As is already clear from the above explanation, an addition command signal is given to the counter 22 when the hose lifting motor 11 is energized to rotate in the forward direction and the hose is lowered, and the motor 11 is energized in the reverse direction to wind up the hose. When the subtraction command signal is given.

If the hose has become stretched due to long-term use or if the device is to be moved to another location, the hose's standby position and long descent position can be stored with new set values by the above-mentioned setting operation in the memory circuit 23.
Changes and adjustments can be made by storing the number instead of the 100 million. That is, this is possible by repeating the installation adjustment operation. 26 in FIG. 1 is switch S1,
The switch stand housing S2'S3 and S5, and 27 and 28 in FIG. 3 are drive circuits for the motors 5 and 11, respectively.

Although one embodiment has been described above, the present invention is not limited to this and various modifications are possible.

For example, in the above embodiment, the switch S5 is turned down or
The hose lifting motor 11 is configured to be energized in the forward or reverse direction only while the ascending switch is held down, but in normal use, "by pressing the ascending switch once, the hose is moved to its highest position." It is also possible to configure the motor 11 to be biased in the reverse direction until the end of the rotation, and to maintain the bias in the forward rotation until the hose is lowered to the standby position by pressing the "lower" switch once. Also,
In the illustrated embodiment, when the hose is in the standby position, the switch S
When 4 is pressed, the motor 11 is energized for normal rotation, and at the same time, the display of the previous lubrication information is reset to zero and the pump motor 5 is energized, but this is automatically activated at other appropriate times. You may do so.

Furthermore, the detection target piece 18 may be attached directly to, for example, the hose IJ reel 10 or its rotating shaft 10', without using the rotating plate 17 that is separate from the hose reel 10.

Further, the number of pieces 18 to be detected is not limited, but when attached to the periphery of the hose reel, it is desirable to attach a large number of pieces 18 at equal intervals in the circumferential direction. The method by which the pulse transmitter 15 detects the detected piece does not matter whether it is a contact or non-contact method. The position at which the detected piece 21 for setting the highest hose position is attached to the hose, that is, the position at which the correction signal is generated, is not limited to the highest position of the hose (nozzle), but may be at any position in the middle of ascending and descending.

For this reason, the detection target piece 21 may be attached to the hose in a variable attachment position. The configuration of the detector 20 may be either a contact point or a non-saddle point. Furthermore, although the hose hoisting means 10 is exemplified as a means for hoisting the hose, the method is not limited to the hoisting method, and a configuration in which the hose is simply taken into the storage case, for example, a roller that holds the hose at the entrance and exit of the case, is driven to rotate. In this case, the detected piece 21 for generating pulses may be attached to the hose at appropriate intervals along its length, or it may be attached to a drive loaf or a rotating member continuous thereto. It can be attached to.

As described above, according to the present invention, the disadvantages associated with conventional control using a cam mechanism are eliminated, the positioning and adjustment of the refueling hose (nozzle) are easy, and the refueling hose has a simple structure and reliable operation. A control device is obtained.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the configuration of an embodiment of the present invention, Fig. 2 a and b
,c is a schematic diagram showing different height positions of the refueling hose, 3rd
The figure is a block diagram of the control circuit. 1... Gas station building, 3... Oil pipe, 4... Pump, 5... Pump motor, 6... Flow meter, 7...
Flow rate pulse transmitter, 8...Display device, 9...Case,
10. ．．・Hose reel, 10'...Hose reel rotating shaft, 11...Hose lifting motor, 13...Hose,
15... Pulse transmitter, 17... Rotating plate, 18,2
1... Piece to be detected, 19... Control unit, 20... Detector (
correction signal generator), 22...pulse counter, 23...
・Memory device, 24... Comparator, 25... Control circuit, 2
6... Switch stand, 27, 28... Motor drive circuit, SI to S5... Switch. Tsutomu Hiiragi'waki 2 figures and 3 figures

Claims (1)

[Scope of Claims] 1. In a refueling device in which a hose with a refueling nozzle connected to its tip is fed out from a storage case installed at a high place or stored in the case, a hose lifting/lowering means for feeding out or storing the hose is provided. means for generating a number of pulse signals corresponding to the length of the rise and fall of the hose in conjunction with the rise and fall length of the hose;
means for storing the number of pulse signals from the pulse signal generating means corresponding to a predetermined vertical length of the refueling hose; the number of pulse signals stored in the storing means and the number of pulse signals generated from the pulse signal generating means; number of pulse signals, or
This number of generated pulse signals is compared with a subtraction value obtained by subtracting the number of refueling hose maximum lowering position pulse signals stored in the storage means, and it is determined that the stored number of pulse signals matches the number of generated pulse signals or the subtraction value. and a control means for selectively stopping the refueling hose at a preselected position by controlling the hose lifting means based on the matching signal. Device. 2. In a refueling device in which a hose with a refueling nozzle connected to the tip is fed out from a storage case installed at a high place or stored in the case, the hose is moved in conjunction with a hose lifting means for feeding out or storing the hose. means for generating a number of pulse signals corresponding to the length of the vertical movement;
means for storing the number of pulse signals from the pulse signal generating means corresponding to a predetermined vertical length of the refueling hose; the number of pulse signals stored in the storing means and the number of pulse signals generated from the pulse signal generating means; The number of pulse signals, or the number of generated pulse signals, is compared with a subtraction value obtained by subtracting the number of pulse signals at the maximum lowering position of the refueling hose stored in the storage means, and the number of stored pulse signals and the number of generated pulse signals are compared. or means for outputting a coincidence signal when the subtraction value coincides with the subtraction value; a control means for controlling the hose lifting means based on the coincidence signal to selectively stop the refueling hose at a preselected position; means for generating a correction signal at the highest position or at least one position in the middle of the elevation, and when the control means receives the correction signal, the control means controls the elevating means using the correction signal instead of the coincidence signal. A hose elevation control device, characterized in that it is configured to control.