JPH04294798A - Device for treating hose of refueling machine - Google Patents

Abstract

PURPOSE:To provide a simple construction which can be snugly fitted in a housing by a method wherein a feed oil hose stored in a housing of a refueling machine can be delivered and wound in association with starting and stopping of a refueling pump in refueling oil without requiring human power and a wind ing reel for winding the refueling hose can be rotated by utilizing the delivery pressure of the refueling pump without providing a separate motor. CONSTITUTION:One end of a cylinder 18 into which a piston 16 is inserted is connected to the delivery side of a pump and a spring for pushing back the piston is provided on the other end of the cylinder and a pinion 22 in engagement with a rack 21 formed on a piston rod 17 is connected to a reel shaft of a winding reel 8 of a refueling hose 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling hose processing device for a refueling machine installed at a refueling station for refueling automobiles and the like with fuel such as gasoline.

0002

[Prior Art] As is well known, among such refueling systems, a ground-fixed type has a housing for the refueling machine erected on an island installed on the ground, and a refueling pipe connected to an underground oil storage tank within the housing. Start up, and in the middle of this oil supply pipe,
A refueling pump connected to a refueling motor and a flow meter connected to a flow rate pulse transmitter are installed in sequence, a refueling hose leading out of the housing is connected to the tip of the refueling pipe, and a refueling nozzle is provided at the end of the refueling hose.

[0003] Conventionally, as a refueling machine having a refueling hose processing mechanism provided in the housing, for example, US Pat. No. 22,427
49 and U.S. Patent No. 2,577,859, and the one in U.S. Pat. No. 2,242,749 has a movable pulley in the housing, and a refueling hose is wound around this movable pulley, and when refueling, the refueling nozzle is By pulling the refueling hose while moving the movable pulley, pull out the refueling hose wrapped around here out of the housing. Further, in the device disclosed in US Pat. No. 2,577,859, a hose reel is provided in the housing, and when refueling, the hose reel is rotated by a motor to pull out the refueling hose wound around the hose reel.

0004

[Problem to be Solved by the Invention] A mechanism that uses a movable pulley as a handling mechanism for a refueling hose provided in a housing requires human power to pull out the refueling hose, and this also requires force to raise the movable pulley. Therefore, a considerable amount of force is required, resulting in poor workability and operability. In addition, models that use a motor to rotate the hose reel require a separate motor and a control circuit, which not only complicates the structure, but also requires a large housing because all of these mechanisms are housed within the housing. There is also a risk that it will become

An object of the present invention is to solve the above-mentioned disadvantages of the conventional example, and when a refueling hose processing mechanism is provided in the housing of a refueling machine, it is easy to operate without requiring human power to pull out and wind up the refueling hose. To provide a hose processing device for a refueling machine that is easy to use, has a simple structure, does not require a separate power source such as a motor, and is drawn out and wound up in conjunction with the start and end of refueling.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention connects one of the cylinders into which the piston is inserted to the discharge side of the pump, and the other is provided with a spring that pushes the piston back, and is formed in the piston rod. The gist is that a pinion that meshes with the rack is connected to the reel shaft of the take-up reel of the refueling hose.

[0007]

According to the present invention, when the refueling pump is turned on to start refueling, its discharge pressure is applied to the cylinder chamber and the piston moves. As a result, the rack formed on the piston rod also moves, the pinion meshing with the rack rotates, the reel shaft connected to the pinion rotates, and the refueling hose wound around the take-up reel is fed out. be done. When refueling is finished and the refueling pump is turned off, the discharge pressure applied to the cylinder chamber disappears, the piston is pushed back by the spring, the piston rod also moves, and the pinion and reel shaft rotate in the opposite direction from the previous time. The drawn-out refueling hose is wound onto a take-up reel.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional front view showing an embodiment of the hose processing device for a refueling machine according to the present invention, and FIG. 2 is a cross-sectional plan view showing an embodiment of the hose processing device for a refueling machine according to the present invention. To explain the overall configuration of the ground-fixed refueling machine to be implemented, a refueling pipe 2 that communicates with an underground fuel storage tank (not shown) is set up in a housing 1 installed on the ground.
A refueling pump 4 to which a refueling motor 3 is connected and a flow meter 6 to which a flow rate pulse transmitter 5 is connected are sequentially installed in the middle of the refueling pipe 2. The oil supply pipe 2 connected to the discharge side of the flow meter 6 is connected via the swivel joint 7 to a oil supply hose 9 whose base end is wound around the take-up reel 8, and the other end of this oil supply hose 9 is connected to the inner wall of the housing 1. The oil was led out of the housing 1 through a guide roller 10 provided at the tip thereof, and a refueling nozzle 11 was provided at the tip.

In the figure, reference numeral 12 denotes a control device using a microcomputer or the like, which controls the refueling nozzle 1 hung on the nozzle hook 13.
Nozzle switch 14 that turns on and off in conjunction with the hooking and unhooking of step 1.
The on/off signal from the flow rate pulse transmitter 5 is used to control the refueling motor 3 on and off based on this signal, and the amount of refueling is measured using the pulse signal from the flow rate pulse transmitter 5, which is displayed on the display 1.
5.

In the refueling machine having such a configuration, a cylinder 18 into which a piston 16 is inserted is arranged as a processing mechanism for the refueling hose 9 in line with the take-up reel 8. piston 1
6 has piston members 16a at both ends of the piston rod 17,
16b, and a spring 19 is elastically loaded between one piston member 16b and the end of the cylinder 18. This spring 19 is connected to the piston 1 on the other piston member 16a side.
It is biased to push 6. Further, a branch pipe 2a was formed in the oil supply pipe 2 on the discharge side of the oil supply pump 4, and this branch pipe 2a was communicated with the cylinder 18 on the piston member 16a side. In this case, a packing using an O-ring 20 or the like is interposed between the piston member 16a and the inner wall surface of the cylinder 18 to provide a watertight structure.

Furthermore, a rack 21 is formed on the lower surface of the piston rod 17, a pinion 22 that meshes with the rack 21 is provided in the cylinder 18, and the pinion 22 is connected to the reel shaft 8a of the take-up reel 8. In addition, a bypass pipe 2b that bypasses the oil supply pump 4 is provided in the oil supply pipe 2, and the hydraulic pressure is set lower than the hydraulic pressure returned by the spring 19 at the connection part between the bypass pipe 2b located on the discharge side of the oil supply pump 4 and the oil supply pipe 2. A pressure relief valve 23 is provided.

Next, the operation will be explained. When not refueling, the base end portion of the refueling hose 9 is wound around the take-up reel 8 and housed in the housing 1. When refueling, when the refueling nozzle 11 is removed from the nozzle hook 13, the nozzle switch 14 is turned on, and this on signal is sent to the control device 12.
The control device outputs an on signal to the drive circuit of the refueling motor 3 based on this on signal. the result,
The oil supply motor 3 rotates, thereby driving the oil supply pump 4 and pumping oil from the underground tank into the oil supply pipe 2.

A portion of the oil pumped up into the oil supply pipe 2 flows into the cylinder 18 through the branch pipe 2a, and the discharge pressure causes the piston 16 to move forward against the elasticity of the spring 19. In this state, the piston member 16a is in watertight contact with the cylinder 18 through the O-ring 20, so the cylinder 18
Even if oil flows into the piston member 16b, this oil will not flow into the piston member 16b. As the piston 16 moves in this way, the piston rod 17 also moves forward, and the rack 21 formed here moves, causing the pinion 22 meshing with the rack 21 to rotate to the left. The rotation of the pinion 22 is transmitted to the reel shaft 8a, and the reel shaft 8a rotates forward, causing the take-up reel 8 to rotate and the refueling hose 9 wound thereon to be fed out of the housing 1. At this time, since the refueling hose 9 is supported by the guide roller 10 at the outlet of the housing 1, the refueling hose 9 is smoothly fed out. When the refueling nozzle 11 is removed from the nozzle hook 13 as described above, the refueling hose 9 that was wound around the take-up reel 8 inside the housing 1 is paid out, and the refueling nozzle 11 can be inserted into the vehicle's refueling port. and refuel.

When refueling is completed and the refueling nozzle 11 is returned to the nozzle hook 13, the nozzle switch 14 is turned off in conjunction with this, and this off signal is input to the control device 12. In response to this off signal, the control device outputs an off signal to the drive circuit of the refueling motor 3, so that the refueling motor 3 and the refueling pump 4 are stopped. As a result, pumping of oil by the oil supply pump 4 is stopped, and the discharge pressure applied to the cylinder 18 via the branch pipe 2a disappears, so that the piston 16 is moved back by the elasticity of the spring 19.

As a result, the piston rod 17 also moves back,
The pinion 22 meshing with the rack 21 rotates in the opposite direction to the previous rotation, the reel shaft 8a rotates in the opposite direction, and the refueling hose 9 that has been fed out of the housing 1 is wound onto the take-up reel 8. At this time, the oil that had flowed into the cylinder 18 was removed from the discharge pipe 2.
The oil is returned to the tank, opens the relief valve 23, flows into the bypass pipe 2b, and returns to the oil storage tank from there. In this way,
When the refueling nozzle 11 is returned to the nozzle hook 13, the refueling hose 9 that had been fed out of the housing 1 is wound up and stored on the take-up reel 8 inside the housing 1.

[0016]

Effects of the Invention As described above, in the hose processing device for a refueling machine of the present invention, the refueling hose stored in the housing is paid out in conjunction with the start and stop of the refueling pump during refueling, and the refueling hose stored in the housing is Since the refueling hose is returned to the original position, there is no need to manually pull out the refueling hose, which improves operability and workability. In addition, since the take-up reel of the refueling hose is rotated using the discharge pressure of oil for refueling, there is no need to install a separate motor to rotate the take-up reel, and the structure is simple and can be housed inside the housing. It is compact and can fit into a narrow space.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a hose processing device for a refueling machine according to the present invention.

FIG. 2 is a cross-sectional plan view showing an embodiment of the hose processing device for a refueling machine according to the present invention.

[Explanation of symbols]

1...Housing
2...Oil supply pipe 2a...Branch pipe
2b...
Bypass pipe 3...Oil supply motor
4...Oil supply pump 5...Flow rate pulse transmitter
6...Flowmeter 7...Swivel joint
8...Take-up reel 8a...Reel shaft
9...Refueling hose 10...Guide roller
11...Refueling nozzle 12...Control device
13... Nozzle hook 14... Nozzle switch
15...Display 16...Piston
16
a, 16b...Piston member 17...Piston rod
18...Cylinder 19...Spring
20...O-ring 21...Rack
22...Pinion 23...Relief valve

Claims (1)

[Claims] Claim 1: One of the cylinders into which the piston is inserted is connected to the discharge side of the pump, and the other is provided with a spring that pushes the piston back, and the pinion that meshes with the rack formed on the piston rod is connected to the reel of the take-up reel of the refueling hose. A hose processing device for a refueling machine characterized by being connected to a shaft.