JPH0315409A - Liquid carrying wagon - Google Patents

Abstract

PURPOSE:To carry a large quantity of liquid with hardly splitting the liquid by providing a table for putting a cup containing the liquid on the upper surface, a shaft for supporting this table, a driving means for vertically moving the shaft, and a level vibration preventing means for adding the gravity at the time of raising the shaft and weakening at the time of lowering. CONSTITUTION:When a table 2 is raised, by a DC motor 9 and a tension spring 17, upward acceleration is added to the table 2 by the actions of the moving speed of a clamp 15 by the DC motor 9 and the force of the tension spring 17 to give inertia force, and the gravity is changed, whereby the amplitude and frequency of level vibration are restrained to prevent a liquid from being split from a cup. When the table is lowered, the downward moving speed is made smaller than the raising speed by the resistance of the tension spring 17 and close to uniform motion to reduce the level vibration, and the splitting is prevented. Hence, those which are conventionally nothing but a mass carrying means can be provided as a wagon of high frequency never splitting even a liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water-conveying container used for transporting glasses of water or other beverages to customers in cafeterias, hotel cafeterias, etc.

Conventional technology In recent years, in cafeterias and coffee rooms, cups for three or four people have been carried on trays, but drinks often spill during transportation, making it unpleasant for customers to be served with drinks all around them. There was something that made me think.

Therefore, in addition to transporting large amounts of beverages, we are reducing the risk of spillage by using wheeled wagons, which would require employees to use a considerable amount of strength to carry them with one hand. This was an improvement.

Problems to be Solved by the Invention However, if only a wagon is used, the acceleration and vibrations generated during transportation will apply vertical force to the surface of the liquid, causing the liquid to spill from the cup. However, it was only possible to transport large quantities to customers.

The object of the present invention is to solve the above-mentioned problems and provide a liquid transportation wagon that prevents liquid from spilling and is capable of transporting a large amount of liquid.

Means for Solving the Problems The liquid transportation wagon of the present invention includes a table on which a cup filled with liquid is placed, a shaft that supports the table,
A moving vehicle equipped with a tube that covers the outer circumference of this shaft, wheels that support this tube, a driving means that moves the shaft up and down, and a liquid that applies gravity when the shaft is ascending and weakens it when it descends. It is equipped with surface vibration prevention means.

When the working wagon is moved, the table is moved up and down by the drive means. At this time, the liquid level vibration preventing means applies gravity to reduce the vibration of the liquid level when the shaft is raised, and when the shaft is lowered, the force of gravity applied by the drive means is reduced to reduce the vibration of the liquid level.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a liquid transport wagon, and a table 2 movable in the vertical direction is disposed on the top surface. This table 2 has a plurality of round holes 3 in its upper surface, and a cup 4 is inserted into the hole 3 and the cup 4 is held around the cup 4 by the periphery of the hole 4. A hollow shaft 5 extends downward from approximately the center of the table 2, and the shaft 5 and the table 2 are rotatably supported. The liquid transport wagon 1 has three wheels 6, 7.8, and has two wheels @6.
, 7 are coaxially supported. 9 is a DC motor and the bottom plate 1
0 with a battery 11. This battery 11 is charged by an AC power source, but the details thereof are not related to the gist of the present invention and will not be described in detail. Further, the number of rotations of the DC motor 9 is reduced so that it rotates at a low speed due to resistance.

Reference numeral 12 denotes a cylinder which is slightly larger than the outer periphery of the shaft 5 and allows the shaft 5 to move freely in the vertical direction. This cylinder 12 is attached so as to pass through the upper plate 13 of the wagon 1 for transporting the hoardings, and is attached to the side wall of the wagon 1 by means of a support plate 14. The rotating shaft of the DC motor 9 is attached below the shaft 5 with a crank 15 interposed therebetween. That is, the pin 16 is attached to the shaft 5, and the crank 1
5 is rotatably supported at one end. This crank 1
The moving distance of the table 2 in the vertical direction is the moving distance of the table 2 in the vertical direction. It is a five-page document in which the DC motor 9 and crank 15 constitute the driving means of the present invention.

Reference numeral 17 denotes a tension spring (liquid surface vibration prevention means), one end of which is fixed to the bottom plate 10, the other end of which is fixed to the pin 16, and the tension panel 1 is connected to a pulley 18 provided on the upper plate 18.
7 is installed.

When the table 2 is raised by the DC motor 9 and the tension spring 17, the speed of movement of the crank 15 by the DC motor 9 and the force by the tension panel 17 act to apply upward acceleration and provide inertia force to overcome gravity. to suppress the amplitude and period of liquid level vibrations and prevent spills from the cup.

Also, when descending, the tension panel 17 acts as a resistance,
By making the downward movement speed smaller than the upward movement speed, it is possible to approximate uniform movement, thereby reducing liquid level vibration and preventing spillage. This makes it possible to provide a highly usable wagon that does not spill liquid, whereas conventionally it was only a means of transporting large quantities.

Effects of the Invention As is clear from the above embodiments, the present invention uses a driving means and a liquid level vibration preventing means. This applies upward acceleration and inertial force to change the force of gravity, suppressing the amplitude and period of vibration of the liquid level and preventing it from spilling from the cup. Further, when descending, the liquid level vibration prevention means acts as a resistance, and the downward movement speed is made smaller than the upward speed, so that the movement approaches a uniform velocity, which reduces liquid level vibration and prevents spillage. This makes it possible to provide a highly usable wagon that does not spill liquid, whereas conventionally it was only a means of transporting large quantities.

4. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of a liquid transportation wagon of the present invention, and FIG. 2 is a perspective view of FIG. 1.

2...table, 4...cup, 5.
...Shaft, 12...Cylinder, 9, 15...
... Drive means, 17... Tension spring (liquid surface vibration prevention means).

Claims (1)

[Claims] A table on which a cup filled with liquid is placed, a shaft that supports this table, a cylinder that covers the outer periphery of this shaft, a moving vehicle equipped with wheels that support this cylinder, and a vehicle that supports the shaft up and down. A wagon for transporting liquid, comprising: a driving means for moving the shaft; and a means for preventing liquid surface vibration, which applies gravity when the shaft ascends and weakens it when it descends.