JPH0227316Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field This invention is a method for controlling the amount of liquid in the storage chamber of tank trucks, tank trailers, tank trucks for transporting liquids, refueling trucks for refueling aircraft, etc. This relates to a liquid level meter in a tank truck for detection.

b. Prior art and problems to be solved Conventionally, in this type of tank truck, a gauge is inserted into the storage chamber from the top of the tank.
The measuring rod was pulled up as necessary, and the amount of liquid was read from the position where the liquid adhered to the measuring rod. With this method, it is possible to know the amount of liquid at that time, but the operation is cumbersome, and it is not possible to know the amount of liquid that changes from moment to moment.
In other words, it is not possible to know when the load is full when loading or when unloading is complete when unloading, and especially when unloading, time is wasted and pumps are not fully discharged. During unloading, the pumps ran idly, causing heat damage to the pumps, and flammable materials were at risk of explosion due to heating.

c Means and action for solving the problem The present invention provides a swinging rod in which a float is fixed to one end and the other end of the swinging rod is pivotally attached to the upper end of the storage chamber so as to be able to swing freely in the vertical direction. A rotary shaft that can freely rotate is provided through the rotary shaft, and a bevel gear is provided at the lower end of this rotary shaft to convert the rocking motion of the rocking rod into the rotary motion of the rotary shaft. A cylindrical body with a display indicating the amount of liquid is fixed to the upper end, and a light emitting section for illuminating this display and a light receiving section facing the display are provided on the top plate, and this light receiving section is connected to an optical fiber. This device communicates with a reading section placed at an appropriate location through the cable, allowing you to know the amount of liquid every moment during loading and unloading, and to prevent overflow during loading or pump failure during unloading. This can prevent idling, etc.

d. Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, storage chambers 5, 5 are separated by a partition plate 3 in a tank 1 of a tank truck. Inside the storage chamber 5, a horizontal shaft 9 is rotatably supported by a bracket 7 fixed to the tank 1, and the lower end of a swinging rod 11 is fixed to the shaft 9. A float 13 is fixed to the other end of the swinging rod 11. Further, a bevel gear 15 is fixed to the shaft 9. An opening 19 is provided in the top plate 17 of the storage chamber 5 and is closed by a lid 21 . Lid part 2
The rotation shaft 27 is rotated vertically by the bearing portion 23 provided on the top plate 1 and the bearing portion 25 provided on the bracket 7.
It is pivotally supported in a posture penetrating through 7. Rotation axis 27
A bevel gear 29 is fixed to the lower end of the bevel gear 29 and engages with the bevel gear 15. That is, the converting device 31 converts the swinging motion of the swinging rod 11 into the rotating motion of the rotating shaft 27 by the bevel gears 15 and 29.
is formed. A display device 33 for displaying the liquid amount in conjunction with the rotational movement of the rotational shaft 27 is provided at the upper end of the rotational shaft 27. That is, a disk 37 is fixed to the upper end of the rotating shaft 27 by a nut 39 to which a cylindrical body 35 made of a transparent material such as glass is fixed. A light projecting section 43 is provided inside the cylindrical body 35 and irradiates the inner surface of the cylindrical body 35 with light sent from a light source (not shown) through an optical fiber 41. A light receiving section 47 is provided outside of the cylindrical body 35 to receive the light emitted from the light projecting section 43 and transmitted through a scale-like display 45 displayed on the surface of the cylindrical body 35. The reading section (not shown) provided at an appropriate location is used to visually read the information. The display 45 displays the liquid amount by rotating the cylindrical body 35 in accordance with the vertical position of the float 13, that is, the liquid level position. The display device 33 is housed within a wall 51 that is fixed to the lid portion 21, and its upper portion is covered by a cover 53.

In the above embodiment, the float 13 moves up and down as the liquid level rises and falls, the swinging rod 11 swings around the shaft 9, the bevel gear 15 rotates together with the shaft 9, and engages with the bevel gear 15. Bevel gear 2
9, the rotation shaft 27 and the cylindrical body 35 rotate, and the display 45 displays the corresponding liquid amount. This display 45
is read by a reading section (not shown).

In addition, instead of the scale-like display 45, as shown in FIG. , B...E and display units 1, 2...5 may be separately provided in two stages. Furthermore, replace A, B...E with colors such as red, blue, yellow, etc., and similarly replace 1, 2...5 with colors, and adjust the liquid volume by the combination of these two colors. may be interpreted. Note that the display may also display precautions corresponding to the liquid amount, such as "refuel", "pump stop", etc.

Furthermore, the light emitted from the light projecting section may be reflected onto a display or the like, and the light receiving section may receive the reflected light.

e Effects of the invention Since the present invention has the configuration as described in the claims, it is possible to know the amount of liquid in the storage chamber from time to time, and prevents damage, explosion, etc. due to overflow during loading and pump idling during unloading. This is something that can be prevented. Furthermore, the operator can detect the liquid level at a remote location such as on the ground, and since the display is provided on the outer periphery of the rotatable cylinder, the length of the display can be increased and the display can be read with good accuracy.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of one embodiment of the present invention, FIG. 2 is a side development view of the main part, and FIG. 3 is a side development view of the main part of another embodiment. 5...Storage tank, 9...Shaft, 11...Swinging rod, 1
3... Float, 15... Bevel gear, 17... Top plate, 27... Rotating shaft, 29... Bevel gear,
35... Cylindrical body, 43... Light projecting section, 45... Display, 47... Light receiving section, 49... Optical fiber.

Claims (1)

[Scope of utility model registration request] A shaft 9 is provided in the storage chamber 5 to which the other end of the swinging rod 11 to which the float 13 is fixed is pivoted so as to be able to swing vertically. A freely movable rotating shaft 27 is provided, and a bevel gear 29 that meshes with the bevel gear 15 fixed to the shaft 9 is fixed to the lower end of the rotating shaft 27. A cylindrical body 35 having a display 45 for displaying the quantity is fixedly provided, and the upper surface plate 17 is provided with a light projecting section 43 that illuminates the display 45 and a light receiving section 4 that faces the display 45.
7, and the light receiving section 47 is connected to an optical fiber 49.
A liquid level meter for a tank truck, characterized in that the liquid level meter is provided in communication with a reading section provided at an appropriate position via the.