JPH066073Y2 - Incorrect injection prevention device for tank truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an erroneous injection preventing device for a tank truck that has a tank divided into a plurality of chambers and a bottom valve at the bottom of each chamber. More specifically, the present invention relates to an erroneous injection prevention device for the injection port lid that prevents oil from being injected into the chamber when the bottom valve is open.

[Conventional technology]

In tank trucks that carry multiple types of oil, the tank is divided into multiple chambers, and an inlet lid that is opened when injecting oil into each chamber is provided at the top of each chamber so that it can be opened and closed. A bottom valve is provided at the bottom of the, and the valve rod connected to the bottom valve is axially displaced while rotating integrally with the handle by the rotation operation of the handle to open and close the bottom valve. , The chambers communicate with each other on the downstream side of the bottom valves.

Such a conventional tank lorry vehicle is not equipped with a mechanism for controlling the opening / closing of the inlet port based on the open / closed state of the bottom valve.

On the other hand, Japanese Utility Model Application No. 58-25822 (Japanese Utility Model Application No. 59-132)
965) discloses a device for displaying the open / closed state of a bottom valve in a tank truck.

[Problems to be solved by the device]

When oil is injected from the manhole into the chamber where the bottom valve is not closed, the oil flows into the common piping through the open bottom valve, mixes with other types of oil, and unloads. This causes inconvenience.

Since the microfilm display device of the specification and drawings of Japanese Patent Application No. 58-25822 only displays the open / closed state of the bottom valve, even if the display device displays the open state of the bottom valve,
There is a problem that the operator inadvertently overlooks the display and injects oil into the chamber in which the bottom valve is open.

The purpose of the present invention is to prevent an erroneous injection of a tank truck that can reliably prevent oil from being injected through the injection port lid when the bottom valve is open, even if the operator does not confirm that the bottom valve is open. Is to provide.

[Means for Solving the Problems]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

In the tank truck that is the premise of the present invention, the inside of the tank is divided into a plurality of chambers, and an injection port lid that is opened when oil is injected into each chamber is provided at the top of each chamber so that it can be opened and closed. Is provided with a bottom valve, and a valve rod (1
4) is designed to open and close the bottom valve by axially displacing while rotating integrally with the handle (16) by rotating the handle (16). In communication with each other.

The device for preventing erroneous injection of a tank truck according to the present invention has the following components (a) to (c).

(A) Injection port lid opening / closing operation member (86) that is rotated to open / close the injection port lid (b) Between an entry position of the injection port lid opening / closing operation member (86) into the rotation path and a retracted position from the rotation path. The inlet cover opening / closing operation member (86) is rotated in the rotating direction of the inlet cover opening / closing operation member (86) in order to open the injection port lid by contacting the opening cover opening / closing operation member (86). Stopper (64) (c) When the valve rod (14) reaches the axial position corresponding to the open position of the bottom valve, the displacement transmitting member (46) is rotated integrally with the valve rod (14).
And the stopper operating member (39) that switches the stopper (64) to the entry position via the displacement transmitting member (46). (Operation) When the bottom valve is open, the valve stem (14) moves to the open position of the bottom valve. The axial position corresponding to the stopper operating member (39) is
The displacement transmitting member (46) is displaced by the rotation integral with 4). The stopper (64) is displaced along with the displacement of the displacement transmitting member (46), and comes to a position where the stopper (64) has entered the rotation path of the inlet lid opening / closing operation member (86). In this state, the inlet cover opening / closing operation member (86)
When the injection port lid is opened by rotating the injection port lid, the injection port lid opening / closing operation member (86) abuts the stopper (64) in the rotation direction, and the rotation operation of the injection port lid opening / closing operation member (86) is prohibited.
Therefore, the inlet lid is not opened and it is difficult to inject oil.

When the bottom valve is closed, the valve stem (14) is in the axial position corresponding to the closed position of the bottom valve, and the stopper operating member (39) is the valve stem (14).
The integral rotation with is released. As a result, the displacement position of the displacement transmission member (46) also changes, and the stopper (64) is at a position retracted from the rotation path of the inlet lid opening / closing operation member (86).
In this state, when the inlet lid opening / closing member (86) is rotated to open the inlet lid, the inlet lid opening / closing member is opened.
(86) avoids contacting the stopper (64) in the direction of rotation,
Rotation of the inlet cover opening / closing member (86) is allowed. As a result, the inlet lid is opened and oil can be injected into the room through the inlet.

〔Example〕

 The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is an overall configuration diagram of the embodiment. The socket 10 is welded and fixed to the tank wall 12 and has a valve rod 14 for opening and closing the bottom valve.
Has the handle 16 fixed at the upper end and the socket 10
And is connected to a bottom valve (not shown) at the lower end side. The tank of a tank lorry is divided into a plurality of chambers for storing a plurality of types of oil, and a manhole 50 and a bottom valve are provided at the top and bottom of each chamber, and each bottom valve is a downstream. Side is connected to a common pipe. The inner cylinder 18 is fitted to the outer circumference of the socket 10, the receiving ring 20 is fitted to the lower outer circumference of the inner cylinder 18, and the set bolt 22 fixes the inner cylinder 18 and the receiving ring 20 to the outer circumference of the socket 10. The claw ring 24 is placed on the receiving ring 20, has a claw 26 in the upper portion, and is fitted to the outer circumference of the inner cylinder 18 so as to be relatively rotatable. Outer cylinder
Reference numeral 28 denotes a groove 36 that is screwed onto the outer periphery of the inner cylinder 18, has a claw 30 that can engage the claw 26 at the lower end (FIG. 2), and has a groove 36 for receiving the finger piece 34 at the upper part.
(FIG. 3). Finger 34 is a set screw
It is fixed to the valve stem 14 by 38 and rotates integrally with the valve stem 14 and the handle 16. The arm 39 is fixed to the outer circumference of the claw ring 24 on the base end side and projects outward in the radial direction.
The lower end 41 is fixed to the tip of the arm 39, and the upper end is fitted with a clevis 40 extending in the radial direction of the valve rod 14. To mount the clevis 40 on the shaft 41, flat washers 42 are applied to both side surfaces of the clevis 40, and a pin 44 prevents the clevis 40 from coming off. The wire 46 is fixed to the clevis 40 by a set bolt 48 at one end side. (Fig. 4).

The manhole 50 is formed in the upper part of the tank and the tank wall 12
Manhole cover 52 and packing from top to bottom
54 and a manhole body flange 56. Seat plate
58 is fixed to the upper part of the manhole cover 52, and the shaft 60 is fixed to the seat plate 58 at the lower end and extends in the vertical direction. On the outer periphery of the shaft 60, a flat washer 62 and a U-shape in side view are sequentially provided from the bottom. The stopper 64 and the plain washer 68 are fitted together, and the pin 70 is diametrically inserted into the shaft 60 at the tip of the shaft 60.
And so on. As shown in FIG. 5, the spring stopper 72 is fixed to the seat plate 58, the torsion spring 66 is wound around the shaft 60 between the upper and lower wall portions of the stopper 64, and the spring stopper 72 and the stopper are provided at both ends, respectively. The stopper 64 is urged around the shaft 60 by contacting the side wall of the stopper 64.
The clevis 74 is fitted to a shaft 76 fixed to the stopper 64 together with a flat washer 78, is rotatably supported by the shaft 76, and
It is prevented from coming off the shaft 76 by 80. Wire 46
Is hung on the roller 82, and at the other end, a set bolt 84
It is fixed to the clevis 74 by. The manhole inlet opening / closing portion 86 is rotated when the inlet cover (not shown) of the manhole cover 52 is opened / closed and serves as a stopper.
When in contact with 64, it becomes difficult to rotate.

The operation of the embodiment will be described.

When the handle 16 is in the upper position, the bottom valve is open. Further, the outer cylinder 28 that rotates integrally with the valve rod 14 via the finger pieces 34 is also in the upper position, and the claw 30 at the lower end of the outer cylinder 28 is separated from the claw 26 of the claw ring 24. The pawl ring 24 is free and the wire 46 is not pulled towards the handle 16. Therefore, in the manhole 50, the stopper 64 enters the rotation path of the manhole inlet opening / closing part 86 and comes into contact with the manhole inlet opening / closing part 86 when the manhole inlet opening / closing part 86 is rotated. There is. Thus, it becomes difficult to rotate the manhole inlet opening / closing part 86, and it becomes difficult to open the inlet of the manhole cover 52. As a result, it is possible to avoid accidentally injecting oil into the tank chamber corresponding to the bottom valve by forgetting to close the bottom valve or thinking that the bottom valve is closed, and avoid mixing oil. To be prevented.

As you turn the handle 16 to close the bottom valve, the outer cylinder 28
However, by being screwed with the outer peripheral side of the inner cylinder 18 on the inner peripheral side, the inner cylinder 18 descends while rotating relative to the inner cylinder 18. Shortly before the bottom valve closes, the claw 30 at the lower end of the outer cylinder 28 engages with the claw 26 of the claw ring 24, and then the claw ring 24 rotates by a predetermined amount before the bottom valve closes. As a result, the wire 46 is pulled toward the handle 16 via the clevis 40, so that the manhole 50
In, the stopper 64 rotates around the shaft 60 against the torsion spring 66 and comes to a position retracted from the rotation path of the manhole inlet opening / closing portion 86. As a result, the manhole inlet opening / closing portion 86 can be operated, and it is allowed to open the inlet cover and inject oil from the inlet of the manhole cover 52 into the tank chamber. Also, since the bottom valve of the tank chamber is closed,
Even if oil is injected from the inlet, no oil mixture occurs.

[Effect of device]

According to this invention, in a tank truck equipped with an inlet lid that is opened / closed by rotating the inlet lid opening / closing operation member, the operator forgets to close the bottom valve or mistakenly thinks that the bottom valve is closed. When attempting to inject oil into the room through the stopper, the stopper is located at the position where it has entered the rotation path of the inlet lid opening / closing operation member, contacts the inlet opening lid opening / closing operation member, and The rotation operation is blocked to prevent the inlet lid from opening. Therefore, it is possible to reliably prevent the oil from being injected into the chamber from the inlet when the bottom valve is open.

[Brief description of drawings]

The drawings are related to an embodiment of the present invention, FIG. 1 is an overall configuration diagram of the embodiment of the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, and FIG. 3 is a view taken along the line III of FIG. FIG. 4 is a view on arrow IV in FIG. 1, and FIG. 5 is a view on arrow V in FIG. 14 ... Valve rod, 16 ... Handle, 39 ... Arm (stopper operating member), 46 ... Wire (displacement transmitting member),
64: stopper, 86: manhole inlet opening / closing part (inlet opening / closing operation member).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Koichi Maejima 2-610, Kushibiki Town, Omiya City, Saitama Prefecture Tokyu Car Manufacturing Co., Ltd. Omiya Plant (72) Inventor Masanori Harada Yamashita Town, Naka Ward, Yokohama City, Kanagawa Prefecture No. 2 Ueno Transport Co., Ltd. (56) References: Actual development Sho 59-132965 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A tank is divided into a plurality of chambers, an injection port lid that is opened when oil is injected into each chamber is openably and closably provided at an upper portion of each chamber, and a bottom is provided at a bottom portion of each chamber. A valve rod (14) provided with a valve and connected to the bottom valve is provided with a handle (1
By the rotation operation of 6), while rotating integrally with the handle (16), the handle is displaced in the axial direction to open and close the bottom valve, and the chambers are mutually connected on the downstream side of the bottom valve. In the tank truck that is in communication with the injection port lid opening / closing operation member (8
6) and the inlet lid opening / closing operation member (86) is displaceable between the entry position into the rotation path and the retreat position from the rotation path, and in the entry position, the rotation direction of the injection port lid opening / closing operation member (86). The stopper (64) that abuts the injection port lid opening / closing operation member (86) and prevents the rotation operation of the injection port lid opening / closing operation member (86) for opening the injection port lid, and the valve rod (14) are At the axial position corresponding to the open position of the bottom valve, the valve rod (14)
And a stopper operating member (39) for displacing the displacement transmitting member (46) by integral rotation and switching the stopper (64) to the entry position via the displacement transmitting member (46). A device to prevent erroneous injection of tank lorry vehicles.