JP2000327100A - Oil supplying equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the flow out of oil by shutting off the supply of the oil to an oil filling channel when a measuring device main body is fallen down. SOLUTION: At the bottom of a measuring device main body 16, a shut off valve 36 is provided for each oil supply channel 25. On the side of the shut off valve 36, a lock mechanism 43 for catching the shut off valve 36 in a valve open condition and a lock release mechanism 45 are provided. When the measuring device main body 16 is deformed greatly, a beam is displaced and pulls up a wire 83 upward for pulling upward an L shape lever 76. As a result, a catching pin 74 is removed from the catching hole of a rotator 72. Then the rotator 72, being rotated clockwise by the spring force of a torsion spring, rotates an eccentric cam in the shut off valve 36 90 deg.. By this, the valve body of the shut off valve 36 shuts off the channel 25 by closing the valve. Then the shut off valve 36 is switched to a valve closed condition and prevents the flow out of oil to be supplied to the oil channel 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling apparatus, and more particularly to a refueling system, which is configured to block a refueling system path to prevent oil from overflowing when a vehicle collides with a weighing machine installed at a refueling station. It relates to a refueling device.

[0002]

2. Description of the Related Art In a fueling device installed in a gas station or the like,
A pump provided inside the weighing machine pumps up the oil liquid in the underground tank and supplies it to the refueling nozzle. A method for supplying to the refueling nozzle,
There is a method in which a pump is not provided inside the weighing machine main body and an oil liquid is supplied to an oil supply nozzle from a pump provided in another weighing machine main body via a branch pipe.

[0003] Generally, the oiling device is installed on a concrete installation table called an island in order to protect the weighing machine main body from the vehicle. In the above case, an oil supply path in which devices such as a pump and a flow meter for supplying the oil liquid to the oil supply hose and the oil supply nozzle are provided inside the weighing machine main body. In recent years, at gas stations,
The so-called self-service in which a customer himself / herself performs a refueling operation has been promoted, and a driver must enter a vehicle into a refueling area and stop at a position where refueling is possible in a situation where there is no worker to guide the vehicle. However, if the driver is a novice driver, the vehicle may be brought too close to the weighing machine main body, and in particular, the bumper of the vehicle may contact the weighing machine main body or cause a collision.

As described above, even when the driver accidentally collides the vehicle with the weighing machine, the oil supply system is formed to prevent the oil liquid from flowing out from the oil supply system built in the weighing machine. A shutoff valve for shutting off the supply of the oil liquid is provided in the pipeline. This shutoff valve is normally opened, and is configured to shut off the oil supply line when the weighing machine collapses.

Further, as described above, in a weighing machine which does not have a pump inside the weighing machine main body, and sends liquid (pressure feed) from a submerged pump or a pump provided in another weighing machine main body,
Even if the weighing machine is tilted or overturned by the collision of the vehicle and the pipe is cut, the pump does not stop, so that the oil liquid sent from the pump leaks from the oil supply passage. Therefore, an emergency shutoff valve is provided in a lubricating device of the type.

FIG. 11 is a side view showing an example of a conventional shut-off valve. FIG. 12 is a longitudinal sectional view showing an example of a conventional shut-off valve. As shown in FIGS. 11 and 12, the conventional shut-off valve is provided so as to be located at the bottom of the weighing machine.
Has been concluded. A pipe communicating with an oil pump (both not shown) of an underground tank is connected to a lower portion of the lower valve body 1, and a pipe communicating with an oil supply hose (not shown) is provided above the upper valve body 2. Roads are connected.

The lower valve body 1 is fixed to a bracket 3a by a U-bolt 3 formed in a U-shape. The bracket 3a is fixed to, for example, a concrete base or the like. Further, an oil supply line 1 formed inside the lower valve body 1
A shutoff valve body 4 is rotatably supported by a shaft 5 at a. Incidentally, the shut-off valve element 4 is usually 2 in FIG.
The oil supply path 1a is opened by rotating downward as shown by the dashed line.

The upper valve body 2 is provided with an internal oil supply line 2.
It has a valve body 6 as a check valve that opens and closes a, and has a constriction 7 on the outer periphery. The constriction 7 is more fragile than the other parts, and is provided so that it first breaks when a lateral shearing force is applied. An end of a shaft 5 that supports the shutoff valve body 4 protrudes outside the upper valve body 2, and a connecting lever 8 is coupled to the end of the shaft 5.
The coupling lever 8 is provided with an engagement recess 9 a formed at the tip of a fixed lever 9 fixed above the constriction 7.
Is engaged.

Here, when the vehicle collides with the weighing machine main body and the weighing machine main body tilts, a shearing force acts on the constricted portion 7 and the constricted portion 7 is cut. As a result, the fixed lever 9 rotates clockwise to rotate the connecting lever 8 in the same direction. Therefore, the shutoff valve element 4 rotates together with the shaft 5 and abuts on a valve seat 2b formed at the bottom of the upper valve body 2 as shown by a solid line in FIG. To shut off between.

Therefore, even if the constricted portion 7 is cut off while the submersible oil pump (both not shown) of the underground tank is activated, the shutoff valve body 4 operates to close and the oil liquid is prevented from flowing out. You.

[0011]

However, in the above-described lubricating apparatus, since the rotating directions of the fixed lever 9 and the connecting lever 8 are determined, for example, in FIG. When the constricted portion 7 is reliably cut, the fixing lever 9 and the connecting lever 8 rotate to allow the shutoff valve 4 to close.
When an external force in the horizontal direction perpendicular to the X direction is applied, or when the neck 7 is cracked and is not reliably cut, the fixing lever 9 and the connecting lever 8 cannot be quickly released and cut off. There is a problem that the valve body 4 cannot be closed.

Further, in the above-described oil supply device, when the constricted portion 7 is cut, the fixed lever 9 and the connection lever 8 are rotated, and the shutoff valve body 4 is connected to the oil supply line 1a and the oil supply line 2a. Therefore, when the shutoff valve element 4 performs a valve closing operation, the upper valve body 2 cannot be recovered unless the upper valve body 2 is replaced, and the upper valve body 2 cannot be reused. .

Conventionally, since restoration work cannot be performed until a new upper valve body 2 arrives, it takes a long time to complete the repair of the weighing machine. Further, in the conventional lubricating apparatus, since the rotation directions of the fixed lever 9 and the connecting lever 8 are determined, for example, in FIG. And the connection lever 8 is rotated, so that the shutoff valve 4 can be closed, but when an external force in the horizontal direction perpendicular to the X direction acts, the fixed lever 9 and the connection lever 8 cannot rotate. Therefore, there is a problem that the shutoff valve 4 cannot be closed.

[0014] Therefore, an object of the present invention is to provide a refueling device that solves the above-mentioned problems.

[0015]

The present invention has the following features to solve the above-mentioned problems. According to the first aspect of the present invention, there is provided an oil supply hose drawn out from a side surface of a weighing machine main body, and an oil supply system which is provided in the weighing machine main body and supplies an oil liquid to an oil supply nozzle provided at a tip of the oil supply hose. When,
A liquid supply means for supplying oil to the oil supply line, a shutoff valve provided in the oil supply line, a valve switching mechanism for switching the shutoff valve to an open or closed state, and A displacement transmitting member that transmits the amount of deformation of the weighing device main body to the valve switching mechanism when deformed by receiving an external force, wherein the deformation of the weighing device main body is controlled by the valve switching mechanism via the displacement transmitting member. And shuts off the shut-off valve by being transmitted to the valve.

Therefore, according to the first aspect of the present invention, since the deformation of the main body of the weighing machine is transmitted to the valve switching mechanism via the displacement transmitting member, the shut-off valve is closed. If the main body of the weighing machine is deformed in a state where it is not received, the oil supply line can be shut off, and the shutoff valve can be reused after the shutoff. The invention according to claim 2 is
2. The oil supply device according to claim 1, wherein the valve switching mechanism holds the shutoff valve in an open state, and releases the holding of the shutoff valve when the displacement transmission member is displaced by a predetermined amount or more. 3. The shut-off valve is closed.

Therefore, according to the second aspect of the invention, when the displacement transmitting member is displaced by a predetermined amount or more due to deformation of the weighing machine main body, the holding of the shutoff valve can be released and the shutoff valve can be closed. The shut-off valve can be closed when the main body of the weighing machine is damaged beyond a predetermined level, and the shut-off valve is not closed when the main body of the weighing machine is slightly deformed.

According to a third aspect of the present invention, there is provided the lubricating device according to the first aspect, wherein the direction is in contact with an intermediate portion in the longitudinal direction of the displacement transmitting member and intersecting with the extending direction of the displacement transmitting member. A restricting member for restricting the displacement of the member is provided. Therefore, according to the third aspect of the present invention, since the regulating member for regulating the displacement in the direction intersecting the extending direction of the displacement transmitting member in contact with the intermediate portion in the longitudinal direction of the displacement transmitting member is provided, The amount of deformation of the main body is transmitted through the displacement transmitting member without loss, and the shut-off valve can be closed regardless of the impact from any direction applied to the weighing machine main body. Sex is raised.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a fuel supply device according to the present invention. FIG. 2 is a longitudinal sectional view showing a state where the shut-off valve is mounted. FIG. 3 is a plan view showing an attached state of the shutoff valve.

As shown in FIG. 1, the refueling device 11 comprises:
A weighing machine main body 16 is installed on a concrete island 14, and front and rear surfaces of the weighing machine main body 16 are provided with nozzle hooks 20a to 20c for hooking refueling nozzles 18a to 18c.
Is provided. The refueling nozzles 18a to 18c are different in the type of oil to be supplied, for example, for regular gasoline, high-octane gasoline, and light oil toy.

The main body 16 of the weighing machine is provided with retraction mechanisms 24a to 24c for supporting oil supply hoses 22a to 22c of different oil types at an upper portion thereof. The weighing machine body 16 is provided therein with an oil supply passage 25 for supplying oil to the oil supply hoses 22a to 22c. An underground tank 26 for storing the oil liquid is buried under the gas station, and an in-oil pump (liquid sending means) 28 for sending the oil liquid is inserted into the underground tank 26. Submersible pump 28
Incorporates a motor unit (not shown), and discharges the oil liquid sucked from the bottom of the underground tank 26 upward. The oil liquid pressurized by the submerged pump 28 is
The oil is supplied to the oil supply line 25 in the weighing machine main body 16 via the vertical pipe 30 and the horizontal pipe 32 inserted into the underground tank 26.

As shown in FIGS. 2 and 3, the concave portion 3 is provided at the center of the island 14 where the weighing machine main body 16 is installed.
4 are provided. The recess 34 is provided in the oil supply passage 25a.
To 25c are housed therein. Therefore, the shutoff valves 36a to 36c are provided so as not to be damaged even if the vehicle collides with the weighing machine main body 16.

FIG. 4 is a perspective view showing the shutoff valve 36 and the oil supply passage 25. FIG. 5 shows the shut-off valve 36 and the oil supply line 2.
It is a front view which expands and shows 5. As shown in FIGS. 4 and 5, the oil supply passage 25 is provided with an oil supply pipe 38 rising in the recess 34, a shutoff valve 36 connected to the upper end of the oil supply pipe 38, and an upper end of the shutoff valve 36. The flexible pipe 40 screwed, the check valve 42 screwed to the upper end of the flexible pipe 40, the joint 44 screwed to the upper end of the check valve 42, and the oil supply pipe 46 screwed to the upper end of the joint 44. Consists of The oil supply pipe 46 is provided with a flow meter (not shown) for measuring an oil supply amount.

The check valve 42 includes a valve element 42a for preventing the oil liquid sent to the oil supply pipe 46 from flowing back to the flexible pipe 40, and a coil spring 42b for pressing the valve element 42a downward (to close the valve). Having. Also, shut-off valve 3
6, a lock mechanism 43 for locking the shut-off valve 36 in an open state and a lock release mechanism 45 for releasing the lock by the lock mechanism 43 are provided on the side surface of the shut-off valve 36. .

Here, the configuration of the shutoff valve 36 will be described. FIG. 6 is a longitudinal sectional view showing the inside of the shutoff valve 36 in the open state. As shown in FIG. 6, the shut-off valve 36 includes a housing 48 interposed between the oil supply pipe 38 and the flexible pipe 40, and a valve seat 50 formed in the housing 48.
, A valve body 52 that is separated from and seated on the valve seat 50, and a coil spring 54 that urges the valve body 52 upward (to close the valve).

On the upper surface of the valve body 52, there are provided a seal member 56 which comes into contact with the valve seat 50, and a guide portion 58 which slides on the opening 50a of the valve seat 50 and guides the movement of the valve body 52. The guide portion 60 extending below the lower portion of the valve body 52 is guided through the guide hole 62a of the spring receiver 62 with which the coil spring 54 contacts, and is guided in the moving direction. Further, a cam pin 64 stands upright at the center of the upper surface of the valve body 52. The tip of the cam pin 64 is formed in a hemispherical shape, and comes into sliding contact with the eccentric cam 66. Eccentric cam 66
Is supported rotatably about a shaft 70 in a flow path 68 in which the oil liquid flows, and has a first cam surface 66a on its outer periphery for holding the valve body 52 at the valve opening position, and a valve body 52 closed. And a second cam surface 66b held in the valve position.

As shown in FIG. 6, usually, the valve body 52
Are urged upward by the spring force of the coil spring 54, but the cam pin 64 is moved upward by the first cam surface 66 of the eccentric cam 66.
a, the valve is held at the valve-opening position separated below the valve seat 50. FIG. 7 is a perspective view showing the lock mechanism 43 and the lock release mechanism 45 of the shutoff valve 36. FIG. 8 is a side view showing the lock mechanism 43 and the lock release mechanism 45 of the shutoff valve 36.

As shown in FIG. 7 and FIG.
On the side of 6, a lock mechanism 43 for locking the shut-off valve 36 in the open state and a lock release mechanism 45 for releasing the lock by the lock mechanism 43 are provided. Lock mechanism 43
Are a circular rotating body (valve switching mechanism) 72 fitted and fixed to the end of the shaft 70 of the eccentric cam 66, and a locking pin 74 formed on the outer periphery of the rotating body 72 and fitted into the locking hole 72a. And an L-shaped lever 76 for supporting the locking pin 74, a coil spring 78 for pressing the L-shaped lever 76 downward, and a guide for slidably guiding the vertical portion 76a of the L-shaped lever 76 in the vertical direction. And a clamp member 82 for clamping the guide portion 80 to the outer periphery of the shutoff valve 36.

The rotating body 72 is connected to the eccentric cam 6 via a shaft 70.
6 are integrally connected. Further, the rotating body 72
The torsion spring 81 (indicated by a broken line in FIG. 7) wound around the shaft 70 is urged to rotate clockwise (A direction) by the spring force. Normally, since the tip 74a of the locking pin 74 is held in a locked state in which the tip 74a is inserted into a locking hole 72a formed on the outer periphery of the rotating body 72, the rotating position of the rotating body 72 is shown in FIG. Locked in position. In this state, since the L-shaped lever 76 has the flange portion 76c provided on the vertical portion 76a pressed downward by the spring force of the coil spring 78, the locking pin 74 is moved to the locking hole 72a of the rotating body 72.
Is pressed in the direction of insertion.

The rotating body 72 has a projecting pin 92 projecting radially from the outer periphery. When the protruding pin 92 rotates clockwise (A direction), the housing 48 of the shut-off valve 36 comes into contact with the protruding pin 92 to rotate the rotating body 7.
A stopper pin 94 that regulates the rotation position of the second lever 2 is provided. Therefore, the rotating body 72 is provided so as to rotate between a locking position locked by the locking pin 74 and a lock release position where the protruding pin 92 abuts on the stopper pin 94.

The lock release mechanism 45 includes a wire (displacement transmitting member) 83 stretched between the L-shaped lever 76 and the beam 90, and a helical ring 84 through which the wire 83 is inserted.
And a connecting member 86 to which the upper end of the wire 83 is connected. The helical ring 84 is fixed to the upper side surface of a column 88 rising from the bottom of the weighing machine main body 16, and is provided so as to regulate the displacement of the wire 83 extending upward in the lateral direction.

The connecting member 86 includes a fixing portion 86a connected to the beam 90, and a U-shaped engaging portion 86b provided below the fixing portion 86a. At the upper end of the wire 83, a J-shaped hook 83a that is hooked on the hook portion 86b of the coupling member 86 is provided, and at the lower end of the wire 83,
A J-shaped hook 83b is provided to be hooked on the horizontal portion 76b of the L-shaped lever 76. An adjusting member (not shown) is provided in the middle of the wire 83 so that the length can be adjusted so that the wire 83 is mounted without slack.

The fixing member 86a of the connecting member 86 is connected to a beam 90 which is suspended between the frames inside the weighing machine main body 16. Then, since the L-shaped lever 76 is pressed downward by the spring force of the coil spring 78, the wire 83 is connected to the horizontal portion of the connecting member 86 and the L-shaped lever 76 in a state where a constant tension is applied and there is no slack. 76b.

FIG. 9 is a side view showing the closed state of the shut-off valve. FIG. 10 is a longitudinal sectional view showing a closed state of the shut-off valve. As shown in FIGS. 9 and 10, when the L-shaped lever 76 is pulled upward against the spring force of the coil spring 78, the locking pin 74 is disengaged from the locking hole 72 a of the rotating body 72. Moving. The locking pin 74 is provided in the locking hole 7.
When the distal end 74a is pulled upward by the insertion length of the fitted distal end 74a of 2a, the distal end 74a is disengaged from the locking hole 72a to release the locking of the locking pin 74.

Therefore, it is possible to arbitrarily set the timing of releasing the locking with respect to the amount of deformation of the weighing machine main body 16 transmitted via the wire 83 by the protruding length of the tip end portion 74a of the locking pin 74. For example, when the amount of deformation of the weighing machine main body 16 is small and the oil supply line 25 is not damaged,
Even when the locking pin 74 is lifted upward, the distal end portion 74a is fitted in the locking hole 72a, so that the locking can be prevented from being released. That is, when the damage to the weighing machine main body 16 is slight, the shutoff valve 36 can be prevented from being closed.

When the amount of deformation of the weighing machine main body 16 is relatively large, the oil supply passage 25 may be damaged. And the locking of the rotating body 72 and the eccentric cam 66 is released. Thus, the rotating body 72 rotates clockwise (A direction) by the spring force of the torsion spring 81, and rotates the eccentric cam 66 by 90 °.

As a result, the cam pin 64 projecting above the valve body 52 of the shut-off valve 36 comes into contact with the second cam surface 66b of the eccentric cam 66. Then, the valve body 52 rises by the spring force of the coil spring 54 to move the seal member 56 to the valve seat 50.
To close the opening 50a. With this, the shut-off valve 36
Closes to prevent the oil liquid supplied to the oil supply passage 25 from flowing out.

Here, consider a case where a vehicle arriving at a refueling area of a gas station for refueling accidentally contacts or collides with the weighing machine body 16. The weighing machine main body 16 is fixed on the island 14 by a fastening member such as a bolt,
When the vehicle collides, there is a possibility that the fuel supply passage 25 housed therein is deformed and damaged. Further, depending on the speed of the vehicle, there is a possibility that the weighing machine main body 16 is inclined or collapsed.

When the weighing machine body 16 is tilted or collapsed as described above, the beam 90
Is also greatly displaced. On the other hand, the shut-off valve 36 of the refueling passage 25 is housed in the recess 34 of the island 14 as shown in FIG.
6 so as not to be directly damaged even if it collides with 6.

However, the oil supply passage 25 extending above the shutoff valve 36 may be damaged if the main body 16 of the weighing machine is greatly deformed, and the oil liquid may flow out. When the weighing machine main body 16 is greatly deformed as described above, the beam 90 is also displaced by the impact of the collision. Thereby, the beam 90
7 moves in the direction of displacement of the beam 90 and pulls the wire 83 in the direction of movement as shown by the dashed line in FIG. Since the lower end of the wire 83 is hooked on the horizontal portion 76b of the L-shaped lever 76, the L-shaped lever 76
Pull up.

At this time, the wire 83 is bent in a V-shape with the spiral ring 84 as a fulcrum, since the wire 83 is inserted through the spiral ring 84 supported by the column 88. Therefore, the wire 83 can secure a stroke for pulling the L-shaped lever 76 upward as compared with the case where the entire wire is inclined. The wire 83 is loosely inserted into the spiral ring 84, and is connected to the weighing machine body 16.
No matter which direction is tilted, L with the helical ring 84 as a fulcrum
The character-shaped lever 76 can be pulled upward. Therefore, no matter what direction the vehicle collides with the weighing machine body 16, the wire 8
3 can lift the L-shaped lever 76 upward to release the locking by the lock mechanism 43. Therefore, the reliability of the shutoff operation of the shutoff valve 36 is enhanced by the lock release mechanism 45.

As described above, when the displacement of the weighing machine main body 16 due to the collision of the vehicle is transmitted to the L-shaped lever 76 via the wire 83, the L-shaped lever 76 resists the spring force of the coil spring 78. Up. As a result, the locking pin 74 connected to the horizontal portion 76b of the L-shaped lever 76
Releases the distal end portion 74a from the locking hole 72a of the rotating body 72.

When the locking of the rotating body 72 by the locking pin 74 is released, the rotating body 72 is released from the torsion spring 8.
The eccentric cam 66 is rotated 90 ° by rotating clockwise (direction A) by the spring force of 1 (see FIGS. 9 and 10). As a result, the cam pin 64 protruding above the valve body 52 of the shutoff valve 36 abuts on the second cam surface 66b of the eccentric cam 66. As a result, the valve element 52 rises due to the spring force of the coil spring 54, contacts the seal member 56 to the valve seat 50, closes the opening 50a, and shuts off the oil supply passage 25. with this,
The shutoff valve 36 is switched to a closed state to prevent the oil liquid supplied to the oil supply passage 25 from flowing out.

Therefore, the oil supply line 2 above the shutoff valve 36
Even if 5 is damaged, it is possible to prevent the oil liquid from flowing out from the damaged portion, to suppress the occurrence of a secondary disaster at the gas station, and to further enhance the safety of the gas station. When the repair of the damaged refueling system path 25 is completed, the rotating body 72
Is rotated counterclockwise to rotate the eccentric cam 66 so that the first cam surface 66a slides on the cam pin 64. As a result, as shown in FIG. 6, the cam pin 64 slidingly contacting the eccentric cam 66 is pressed downward to displace the valve body 52 in the valve opening direction. Therefore, the shut-off valve 36 is
Is switched to a valve-open state separated from the valve seat 50, and the liquid can be sent to the oil supply line 25.

As described above, even if the weighing machine main body 16 is deformed or collapsed by an external force, the shut-off valve 36 can be reused, so that the recovery operation can be easily performed and the repair can be performed in a short time. In the above embodiment, the underground tank 2
The configuration in which the in-oil pump 28 is inserted into the inside 6 is described as an example. However, the invention is not limited to this. Of course, the present invention can be applied to an oil supply device of a type that supplies an oil liquid to an oil supply nozzle from a pump via a branch pipe, or a type in which a pump is built in the metering device main body 16.

It goes without saying that the present invention can be applied to either a self-service refueling system or a system in which a service station worker performs refueling work.

[0047]

As described above, according to the first aspect of the present invention, since the deformation of the weighing machine main body is transmitted to the valve switching mechanism via the displacement transmitting member, the shutoff valve is closed. If the main body of the weighing machine is deformed in a state where the valve is not damaged, the oil supply line can be shut off, and the shutoff valve can be reused after the shutoff. Therefore, the recovery operation can be easily performed, and the repair can be performed in a short time.

According to the second aspect of the present invention,
When the displacement transmitting member is displaced by a predetermined amount or more due to deformation of the weighing machine main body, the holding of the shut-off valve can be released and the shut-off valve can be closed. Can be closed, and when the deformation of the weighing machine main body is slight, the shut-off valve is not closed. Further, when the weighing machine body is tilted or collapsed to such an extent that the oil supply passage is damaged, the shutoff valve can be reliably closed to prevent the oil liquid from flowing out.

According to the third aspect of the present invention,
Since the regulating member that regulates the displacement in the direction intersecting with the extending direction of the displacement transmitting member by contacting the intermediate portion in the longitudinal direction of the displacement transmitting member is provided, the amount of deformation of the weighing machine body is reduced without loss through the displacement transmitting member. It is possible to close the shut-off valve regardless of which direction the shock is transmitted and applied from any direction to the weighing machine main body, and the reliability of the shut-off valve at the time of a vehicle collision can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a fuel supply device according to the present invention.

FIG. 2 is a vertical cross-sectional view showing an attached state of a shut-off valve.

FIG. 3 is a plan view showing an attached state of a shutoff valve.

FIG. 4 is a perspective view showing a shut-off valve and an oil supply passage.

FIG. 5 is an enlarged front view showing a shutoff valve and an oil supply passage.

FIG. 6 is a longitudinal sectional view showing the inside of the shut-off valve in an open state.

7 is a perspective view showing a lock mechanism 43 and a lock release mechanism 45 of the shut-off valve 36. FIG.

8 is a side view showing a lock mechanism 43 and a lock release mechanism 45 of the shutoff valve 36. FIG.

FIG. 9 is a side view showing a closed state of the shutoff valve.

FIG. 10 is a longitudinal sectional view showing a closed state of the shut-off valve.

FIG. 11 is a side view showing an example of a conventional shut-off valve.

FIG. 12 is a longitudinal sectional view showing an example of a conventional shut-off valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Refueling apparatus 14 Island 16 Weighing machine main body 18a-18c Refueling nozzle 22a-22c Refueling hose 25,25a-25c Refueling system passage 26 Underground tank 28 Pump in oil 34 Recess 36,36a-36c Shutoff valve 40 Flexible pipe 42 Check valve 43 Lock mechanism 45 Lock release mechanism 48 Housing 50 Valve seat 52 Valve body 56 Seal member 58 Guide part 60 Guide part 64 Cam pin 66 Eccentric cam 66a First cam surface 66b Second cam surface 70 Shaft 72 Rotating body 74 Lock pin 76 L-shaped lever 80 Guide part 83 Wire 84 Spiral ring 86 Coupling member 88 Prop 90 Beam 92 Protruding pin 94 Stopper pin

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Kazuaki Kanzaki 3-9-27 Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa F-term (reference) 3T083 AA02 AD23

Claims (3)

[Claims] 1. An oil supply hose drawn out from a side surface of a weighing machine main body, an oil supply system passage provided in the weighing machine main body and configured to supply an oil liquid to an oil supply nozzle provided at a tip of the oil supply hose; A liquid feeding unit that feeds an oil liquid to a system path; a shutoff valve provided in the oil supply path; a valve switching mechanism that switches the shutoff valve to an open or closed state; And a displacement transmitting member for transmitting a deformation amount of the weighing device main body to the valve switching mechanism when receiving and deforming, wherein the deformation of the weighing device main body is transmitted to the valve switching mechanism via the displacement transmitting member. The fuel supply device is characterized in that the shut-off valve is closed by being performed. 2. The oil supply device according to claim 1, wherein the valve switching mechanism holds the shutoff valve in an open state, and holds the shutoff valve when the displacement transmitting member is displaced by a predetermined amount or more. Wherein the shut-off valve is closed by releasing the pressure. 3. The fuel supply device according to claim 1, wherein the restricting member is in contact with an intermediate portion in a longitudinal direction of the displacement transmitting member and restricts displacement in a direction intersecting with an extending direction of the displacement transmitting member. A refueling device characterized by comprising: